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-rw-r--r--src/payload.c799
1 files changed, 31 insertions, 768 deletions
diff --git a/src/payload.c b/src/payload.c
index 2a60a762..7721b755 100644
--- a/src/payload.c
+++ b/src/payload.c
@@ -1,5 +1,5 @@
/*
- * Payload expression protocol and type definitions and related functions.
+ * Payload expression and related functions.
*
* Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
*
@@ -22,36 +22,13 @@
#include <rule.h>
#include <expression.h>
#include <payload.h>
-#include <headers.h>
#include <gmputil.h>
#include <utils.h>
-static const char *payload_base_names[] = {
- [PAYLOAD_BASE_INVALID] = "invalid",
- [PAYLOAD_BASE_LL_HDR] = "link layer",
- [PAYLOAD_BASE_NETWORK_HDR] = "network layer",
- [PAYLOAD_BASE_TRANSPORT_HDR] = "transport layer",
-};
-
-static const char *payload_base_tokens[] = {
- [PAYLOAD_BASE_INVALID] = "invalid",
- [PAYLOAD_BASE_LL_HDR] = "ll",
- [PAYLOAD_BASE_NETWORK_HDR] = "nh",
- [PAYLOAD_BASE_TRANSPORT_HDR] = "th",
-};
-
-static const struct payload_template payload_unknown_template =
- PAYLOAD_TEMPLATE("unknown", &invalid_type, 0, 0);
-
-static const struct payload_desc payload_unknown_desc = {
- .name = "unknown",
- .base = PAYLOAD_BASE_INVALID,
-};
-
static void payload_expr_print(const struct expr *expr)
{
- const struct payload_desc *desc;
- const struct payload_template *tmpl;
+ const struct proto_desc *desc;
+ const struct proto_hdr_template *tmpl;
desc = expr->payload.desc;
tmpl = expr->payload.tmpl;
@@ -59,7 +36,7 @@ static void payload_expr_print(const struct expr *expr)
printf("%s %s", desc->name, tmpl->token);
else
printf("payload @%s,%u,%u",
- payload_base_tokens[expr->payload.base],
+ proto_base_tokens[expr->payload.base],
expr->payload.offset, expr->len);
}
@@ -79,11 +56,11 @@ static const struct expr_ops payload_expr_ops = {
};
struct expr *payload_expr_alloc(const struct location *loc,
- const struct payload_desc *desc,
+ const struct proto_desc *desc,
unsigned int type)
{
- const struct payload_template *tmpl;
- enum payload_bases base;
+ const struct proto_hdr_template *tmpl;
+ enum proto_bases base;
struct expr *expr;
unsigned int flags = 0;
@@ -93,8 +70,8 @@ struct expr *payload_expr_alloc(const struct location *loc,
if (type == desc->protocol_key)
flags = EXPR_F_PROTOCOL;
} else {
- tmpl = &payload_unknown_template;
- base = PAYLOAD_BASE_INVALID;
+ tmpl = &proto_unknown_template;
+ base = PROTO_BASE_INVALID;
}
expr = expr_alloc(loc, &payload_expr_ops, tmpl->dtype,
@@ -109,7 +86,7 @@ struct expr *payload_expr_alloc(const struct location *loc,
return expr;
}
-void payload_init_raw(struct expr *expr, enum payload_bases base,
+void payload_init_raw(struct expr *expr, enum proto_bases base,
unsigned int offset, unsigned int len)
{
expr->payload.base = base;
@@ -118,151 +95,24 @@ void payload_init_raw(struct expr *expr, enum payload_bases base,
}
/**
- * payload_select_proto - find protocol description by protocol value linking
- * it to lower layer protocol
- *
- * @base: lower layer protocol description
- * @num: protocol value
- */
-static const struct payload_desc *
-payload_select_proto(const struct payload_desc *base, unsigned int num)
-{
- unsigned int i;
-
- for (i = 0; i < array_size(base->protocols); i++) {
- if (base->protocols[i].num == num)
- return base->protocols[i].desc;
- }
- return NULL;
-}
-
-/**
- * payload_proto_val - return protocol number linking two protocols together
- *
- * @base: lower layer protocol description
- * @desc: upper layer protocol description
- */
-static int payload_proto_val(const struct payload_desc *base,
- const struct payload_desc *desc)
-{
- unsigned int i;
-
- for (i = 0; i < array_size(base->protocols); i++) {
- if (base->protocols[i].desc == desc)
- return base->protocols[i].num;
- }
- return -1;
-}
-
-static const struct dev_payload_desc dev_payload_desc[] = {
- DEV_PAYLOAD_DESC(ARPHRD_ETHER, &payload_eth),
-};
-
-/**
- * payload_dev_type - return arphrd type linking a device and a protocol together
- *
- * @desc: the protocol description
- * @res: pointer to result
- */
-static int payload_dev_type(const struct payload_desc *desc, uint16_t *res)
-{
- unsigned int i;
-
- for (i = 0; i < array_size(dev_payload_desc); i++) {
- if (dev_payload_desc[i].desc == desc) {
- *res = dev_payload_desc[i].type;
- return 0;
- }
- }
- return -1;
-}
-
-/**
- * payload_dev_desc - return protocol description for an arphrd type
- *
- * @type: the arphrd type
- */
-static const struct payload_desc *payload_dev_desc(uint16_t type)
-{
- unsigned int i;
-
- for (i = 0; i < array_size(dev_payload_desc); i++) {
- if (dev_payload_desc[i].type == type)
- return dev_payload_desc[i].desc;
- }
- return NULL;
-}
-
-static const struct payload_hook_desc payload_hooks[] = {
- [NFPROTO_BRIDGE] = PAYLOAD_HOOK(PAYLOAD_BASE_LL_HDR, &payload_eth),
- [NFPROTO_IPV4] = PAYLOAD_HOOK(PAYLOAD_BASE_NETWORK_HDR, &payload_ip),
- [NFPROTO_IPV6] = PAYLOAD_HOOK(PAYLOAD_BASE_NETWORK_HDR, &payload_ip6),
- [NFPROTO_ARP] = PAYLOAD_HOOK(PAYLOAD_BASE_NETWORK_HDR, &payload_arp),
-};
-
-/**
- * payload_ctx_init - initialize payload context for a given hook family
- *
- * @ctx: payload context
- * @family: hook family
- */
-void payload_ctx_init(struct payload_ctx *ctx, unsigned int family)
-{
- const struct payload_hook_desc *h = &payload_hooks[family];
-
- memset(ctx, 0, sizeof(*ctx));
- ctx->family = family;
- ctx->protocol[h->base].desc = h->desc;
-}
-
-/**
- * payload_ctx_update_meta - update payload context with meta expression
- *
- * @ctx: payload context
- * @expr: relational meta expression
- *
- * Update LL payload context based on IIFTYPE meta match in non-LL hooks.
- */
-void payload_ctx_update_meta(struct payload_ctx *ctx, const struct expr *expr)
-{
- const struct payload_hook_desc *h = &payload_hooks[ctx->family];
- const struct expr *left = expr->left, *right = expr->right;
- const struct payload_desc *desc;
-
- if (left->meta.key != NFT_META_IIFTYPE)
- return;
-
- assert(expr->op == OP_EQ);
- if (h->base < PAYLOAD_BASE_NETWORK_HDR)
- return;
-
- desc = payload_dev_desc(mpz_get_uint16(right->value));
- if (desc == NULL)
- desc = &payload_unknown_desc;
-
- ctx->protocol[PAYLOAD_BASE_LL_HDR].location = expr->location;
- ctx->protocol[PAYLOAD_BASE_LL_HDR].desc = desc;
-}
-
-/**
- * payload_ctx_update - update payload context
+ * payload_expr_pctx_update - update protocol context based on payload match
*
- * @ctx: payload context
+ * @ctx: protocol context
* @expr: relational payload expression
*
- * Update payload context for relational payload expressions.
+ * Update protocol context for relational payload expressions.
*/
-void payload_ctx_update(struct payload_ctx *ctx, const struct expr *expr)
+void payload_expr_pctx_update(struct proto_ctx *ctx, const struct expr *expr)
{
const struct expr *left = expr->left, *right = expr->right;
- const struct payload_desc *base, *desc;
+ const struct proto_desc *base, *desc;
if (!(left->flags & EXPR_F_PROTOCOL))
return;
assert(expr->op == OP_EQ);
base = ctx->protocol[left->payload.base].desc;
- desc = payload_select_proto(base, mpz_get_uint32(right->value));
+ desc = proto_find_upper(base, mpz_get_uint32(right->value));
ctx->protocol[left->payload.base + 1].location = expr->location;
ctx->protocol[left->payload.base + 1].desc = desc;
@@ -294,9 +144,9 @@ void payload_ctx_update(struct payload_ctx *ctx, const struct expr *expr)
int payload_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
struct expr **res)
{
- const struct payload_hook_desc *h = &payload_hooks[ctx->pctx.family];
- const struct payload_desc *desc;
- const struct payload_template *tmpl;
+ const struct hook_proto_desc *h = &hook_proto_desc[ctx->pctx.family];
+ const struct proto_desc *desc;
+ const struct proto_hdr_template *tmpl;
struct expr *dep, *left, *right;
int protocol;
uint16_t type;
@@ -307,7 +157,7 @@ int payload_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
"payload base is invalid for this "
"family");
- if (payload_dev_type(expr->payload.desc, &type) < 0)
+ if (proto_dev_type(expr->payload.desc, &type) < 0)
return expr_error(ctx, expr,
"protocol specification is invalid "
"for this family");
@@ -327,9 +177,9 @@ int payload_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
return expr_error(ctx, expr,
"ambiguous payload specification: "
"no %s protocol specified",
- payload_base_names[expr->payload.base - 1]);
+ proto_base_names[expr->payload.base - 1]);
- protocol = payload_proto_val(desc, expr->payload.desc);
+ protocol = proto_find_num(desc, expr->payload.desc);
if (protocol < 0)
return expr_error(ctx, expr,
"conflicting protocols specified: %s vs. %s",
@@ -342,7 +192,7 @@ int payload_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
tmpl->len, &protocol);
dep = relational_expr_alloc(&expr->location, OP_EQ, left, right);
- payload_ctx_update(&ctx->pctx, dep);
+ payload_expr_pctx_update(&ctx->pctx, dep);
*res = dep;
return 0;
}
@@ -351,15 +201,15 @@ int payload_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
* payload_expr_complete - fill in type information of a raw payload expr
*
* @expr: the payload expression
- * @ctx: payload context
+ * @ctx: protocol context
*
* Complete the type of a raw payload expression based on the context. If
* insufficient information is available the expression remains unchanged.
*/
-void payload_expr_complete(struct expr *expr, const struct payload_ctx *ctx)
+void payload_expr_complete(struct expr *expr, const struct proto_ctx *ctx)
{
- const struct payload_desc *desc;
- const struct payload_template *tmpl;
+ const struct proto_desc *desc;
+ const struct proto_hdr_template *tmpl;
unsigned int i;
assert(expr->ops->type == EXPR_PAYLOAD);
@@ -387,7 +237,7 @@ void payload_expr_complete(struct expr *expr, const struct payload_ctx *ctx)
*
* @list: list to append expanded payload expressions to
* @expr: the payload expression to expand
- * @ctx: payload context
+ * @ctx: protocol context
*
* Expand a merged adjacent payload expression into its original components
* by splitting elements off the beginning matching a payload template.
@@ -396,10 +246,10 @@ void payload_expr_complete(struct expr *expr, const struct payload_ctx *ctx)
* offset order.
*/
void payload_expr_expand(struct list_head *list, struct expr *expr,
- const struct payload_ctx *ctx)
+ const struct proto_ctx *ctx)
{
- const struct payload_desc *desc;
- const struct payload_template *tmpl;
+ const struct proto_desc *desc;
+ const struct proto_hdr_template *tmpl;
struct expr *new;
unsigned int i;
@@ -465,590 +315,3 @@ struct expr *payload_expr_join(const struct expr *e1, const struct expr *e2)
expr->len = e1->len + e2->len;
return expr;
}
-
-#define HDR_TEMPLATE(__name, __dtype, __type, __member) \
- PAYLOAD_TEMPLATE(__name, __dtype, \
- offsetof(__type, __member) * 8, \
- field_sizeof(__type, __member) * 8)
-
-#define HDR_FIELD(__name, __struct, __member) \
- HDR_TEMPLATE(__name, &integer_type, __struct, __member)
-#define HDR_BITFIELD(__name, __dtype, __offset, __len) \
- PAYLOAD_TEMPLATE(__name, __dtype, __offset, __len)
-#define HDR_TYPE(__name, __dtype, __struct, __member) \
- HDR_TEMPLATE(__name, __dtype, __struct, __member)
-
-#define INET_PROTOCOL(__name, __struct, __member) \
- HDR_TYPE(__name, &inet_protocol_type, __struct, __member)
-#define INET_SERVICE(__name, __struct, __member) \
- HDR_TYPE(__name, &inet_service_type, __struct, __member)
-
-/*
- * AH
- */
-
-#define AHHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct ip_auth_hdr, __member)
-
-const struct payload_desc payload_ah = {
- .name = "ah",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .protocol_key = AHHDR_NEXTHDR,
- .protocols = {
- PAYLOAD_PROTO(IPPROTO_ESP, &payload_esp),
- PAYLOAD_PROTO(IPPROTO_AH, &payload_ah),
- PAYLOAD_PROTO(IPPROTO_COMP, &payload_comp),
- PAYLOAD_PROTO(IPPROTO_UDP, &payload_udp),
- PAYLOAD_PROTO(IPPROTO_UDPLITE, &payload_udplite),
- PAYLOAD_PROTO(IPPROTO_TCP, &payload_tcp),
- PAYLOAD_PROTO(IPPROTO_DCCP, &payload_dccp),
- PAYLOAD_PROTO(IPPROTO_SCTP, &payload_sctp),
- },
- .templates = {
- [AHHDR_NEXTHDR] = INET_PROTOCOL("nexthdr", struct ip_auth_hdr, nexthdr),
- [AHHDR_HDRLENGTH] = AHHDR_FIELD("hdrlength", hdrlen),
- [AHHDR_RESERVED] = AHHDR_FIELD("reserved", reserved),
- [AHHDR_SPI] = AHHDR_FIELD("spi", spi),
- [AHHDR_SEQUENCE] = AHHDR_FIELD("sequence", seq_no),
- },
-};
-
-/*
- * ESP
- */
-
-#define ESPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct ip_esp_hdr, __member)
-
-const struct payload_desc payload_esp = {
- .name = "esp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [ESPHDR_SPI] = ESPHDR_FIELD("spi", spi),
- [ESPHDR_SEQUENCE] = ESPHDR_FIELD("sequence", seq_no),
- },
-};
-
-/*
- * IPCOMP
- */
-
-#define COMPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct ip_comp_hdr, __member)
-
-const struct payload_desc payload_comp = {
- .name = "comp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .protocol_key = COMPHDR_NEXTHDR,
- .protocols = {
- PAYLOAD_PROTO(IPPROTO_ESP, &payload_esp),
- PAYLOAD_PROTO(IPPROTO_AH, &payload_ah),
- PAYLOAD_PROTO(IPPROTO_COMP, &payload_comp),
- PAYLOAD_PROTO(IPPROTO_UDP, &payload_udp),
- PAYLOAD_PROTO(IPPROTO_UDPLITE, &payload_udplite),
- PAYLOAD_PROTO(IPPROTO_TCP, &payload_tcp),
- PAYLOAD_PROTO(IPPROTO_DCCP, &payload_dccp),
- PAYLOAD_PROTO(IPPROTO_SCTP, &payload_sctp),
- },
- .templates = {
- [COMPHDR_NEXTHDR] = INET_PROTOCOL("nexthdr", struct ip_comp_hdr, nexthdr),
- [COMPHDR_FLAGS] = COMPHDR_FIELD("flags", flags),
- [COMPHDR_CPI] = COMPHDR_FIELD("cpi", cpi),
- },
-};
-
-/*
- * ICMP
- */
-
-#include <netinet/ip_icmp.h>
-
-static const struct symbol_table icmp_type_tbl = {
- .symbols = {
- SYMBOL("echo-reply", ICMP_ECHOREPLY),
- SYMBOL("destination-unreachable", ICMP_DEST_UNREACH),
- SYMBOL("source-quench", ICMP_SOURCE_QUENCH),
- SYMBOL("redirect", ICMP_REDIRECT),
- SYMBOL("echo-request", ICMP_ECHO),
- SYMBOL("time-exceeded", ICMP_TIME_EXCEEDED),
- SYMBOL("parameter-problem", ICMP_PARAMETERPROB),
- SYMBOL("timestamp-request", ICMP_TIMESTAMP),
- SYMBOL("timestamp-reply", ICMP_TIMESTAMPREPLY),
- SYMBOL("info-request", ICMP_INFO_REQUEST),
- SYMBOL("info-reply", ICMP_INFO_REPLY),
- SYMBOL("address-mask-request", ICMP_ADDRESS),
- SYMBOL("address-mask-reply", ICMP_ADDRESSREPLY),
- SYMBOL_LIST_END
- },
-};
-
-static const struct datatype icmp_type_type = {
- .type = TYPE_ICMP_TYPE,
- .name = "icmp_type",
- .desc = "ICMP type",
- .byteorder = BYTEORDER_BIG_ENDIAN,
- .size = BITS_PER_BYTE,
- .basetype = &integer_type,
- .sym_tbl = &icmp_type_tbl,
-};
-
-#define ICMPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct icmphdr, __member)
-#define ICMPHDR_TYPE(__name, __type, __member) \
- HDR_TYPE(__name, __type, struct icmphdr, __member)
-
-const struct payload_desc payload_icmp = {
- .name = "icmp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [ICMPHDR_TYPE] = ICMPHDR_TYPE("type", &icmp_type_type, type),
- [ICMPHDR_CODE] = ICMPHDR_FIELD("code", code),
- [ICMPHDR_CHECKSUM] = ICMPHDR_FIELD("checksum", checksum),
- [ICMPHDR_ID] = ICMPHDR_FIELD("id", un.echo.id),
- [ICMPHDR_SEQ] = ICMPHDR_FIELD("sequence", un.echo.sequence),
- [ICMPHDR_GATEWAY] = ICMPHDR_FIELD("gateway", un.gateway),
- [ICMPHDR_MTU] = ICMPHDR_FIELD("mtu", un.frag.mtu),
- },
-};
-
-/*
- * UDP/UDP-Lite
- */
-
-#include <netinet/udp.h>
-#define UDPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct udphdr, __member)
-
-const struct payload_desc payload_udp = {
- .name = "udp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [UDPHDR_SPORT] = INET_SERVICE("sport", struct udphdr, source),
- [UDPHDR_DPORT] = INET_SERVICE("dport", struct udphdr, dest),
- [UDPHDR_LENGTH] = UDPHDR_FIELD("length", len),
- [UDPHDR_CHECKSUM] = UDPHDR_FIELD("checksum", check),
- },
-};
-
-const struct payload_desc payload_udplite = {
- .name = "udplite",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [UDPHDR_SPORT] = INET_SERVICE("sport", struct udphdr, source),
- [UDPHDR_DPORT] = INET_SERVICE("dport", struct udphdr, dest),
- [UDPHDR_CSUMCOV] = UDPHDR_FIELD("csumcov", len),
- [UDPHDR_CHECKSUM] = UDPHDR_FIELD("checksum", check),
- },
-};
-
-/*
- * TCP
- */
-
-#include <netinet/tcp.h>
-
-static const struct symbol_table tcp_flag_tbl = {
- .symbols = {
- SYMBOL("fin", TCP_FLAG_FIN),
- SYMBOL("syn", TCP_FLAG_SYN),
- SYMBOL("rst", TCP_FLAG_RST),
- SYMBOL("psh", TCP_FLAG_PSH),
- SYMBOL("ack", TCP_FLAG_ACK),
- SYMBOL("urg", TCP_FLAG_URG),
- SYMBOL("ecn", TCP_FLAG_ECN),
- SYMBOL("cwr", TCP_FLAG_CWR),
- SYMBOL_LIST_END
- },
-};
-
-static const struct datatype tcp_flag_type = {
- .type = TYPE_TCP_FLAG,
- .name = "tcp_flag",
- .desc = "TCP flag",
- .byteorder = BYTEORDER_BIG_ENDIAN,
- .size = BITS_PER_BYTE,
- .basetype = &bitmask_type,
- .sym_tbl = &tcp_flag_tbl,
-};
-
-#define TCPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct tcphdr, __member)
-
-const struct payload_desc payload_tcp = {
- .name = "tcp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [TCPHDR_SPORT] = INET_SERVICE("sport", struct tcphdr, source),
- [TCPHDR_DPORT] = INET_SERVICE("dport", struct tcphdr, dest),
- [TCPHDR_SEQ] = TCPHDR_FIELD("sequence", seq),
- [TCPHDR_ACKSEQ] = TCPHDR_FIELD("ackseq", ack_seq),
- [TCPHDR_DOFF] = {},
- [TCPHDR_RESERVED] = {},
- [TCPHDR_FLAGS] = HDR_BITFIELD("flags", &tcp_flag_type,
- 13 * BITS_PER_BYTE,
- BITS_PER_BYTE),
- [TCPHDR_WINDOW] = TCPHDR_FIELD("window", window),
- [TCPHDR_CHECKSUM] = TCPHDR_FIELD("checksum", check),
- [TCPHDR_URGPTR] = TCPHDR_FIELD("urgptr", urg_ptr),
- },
-};
-
-/*
- * DCCP
- */
-
-static const struct symbol_table dccp_pkttype_tbl = {
- .symbols = {
- SYMBOL("request", DCCP_PKT_REQUEST),
- SYMBOL("response", DCCP_PKT_RESPONSE),
- SYMBOL("data", DCCP_PKT_DATA),
- SYMBOL("ack", DCCP_PKT_ACK),
- SYMBOL("dataack", DCCP_PKT_DATAACK),
- SYMBOL("closereq", DCCP_PKT_CLOSEREQ),
- SYMBOL("close", DCCP_PKT_CLOSE),
- SYMBOL("reset", DCCP_PKT_RESET),
- SYMBOL("sync", DCCP_PKT_SYNC),
- SYMBOL("syncack", DCCP_PKT_SYNCACK),
- SYMBOL_LIST_END
- },
-};
-
-static const struct datatype dccp_pkttype_type = {
- .type = TYPE_DCCP_PKTTYPE,
- .name = "dccp_pkttype",
- .desc = "DCCP packet type",
- .byteorder = BYTEORDER_INVALID,
- .size = 4,
- .basetype = &integer_type,
- .sym_tbl = &dccp_pkttype_tbl,
-};
-
-
-#define DCCPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct dccp_hdr, __member)
-
-const struct payload_desc payload_dccp = {
- .name = "dccp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [DCCPHDR_SPORT] = INET_SERVICE("sport", struct dccp_hdr, dccph_sport),
- [DCCPHDR_DPORT] = INET_SERVICE("dport", struct dccp_hdr, dccph_dport),
- [DCCPHDR_TYPE] = HDR_BITFIELD("type", &dccp_pkttype_type, 67, 4),
- },
-};
-
-/*
- * SCTP
- */
-
-#define SCTPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct sctphdr, __member)
-
-const struct payload_desc payload_sctp = {
- .name = "sctp",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [SCTPHDR_SPORT] = INET_SERVICE("sport", struct sctphdr, source),
- [SCTPHDR_DPORT] = INET_SERVICE("dport", struct sctphdr, dest),
- [SCTPHDR_VTAG] = SCTPHDR_FIELD("vtag", vtag),
- [SCTPHDR_CHECKSUM] = SCTPHDR_FIELD("checksum", checksum),
- },
-};
-
-/*
- * IPv4
- */
-
-#include <netinet/ip.h>
-#define IPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct iphdr, __member)
-#define IPHDR_ADDR(__name, __member) \
- HDR_TYPE(__name, &ipaddr_type, struct iphdr, __member)
-
-const struct payload_desc payload_ip = {
- .name = "ip",
- .base = PAYLOAD_BASE_NETWORK_HDR,
- .protocol_key = IPHDR_PROTOCOL,
- .protocols = {
- PAYLOAD_PROTO(IPPROTO_ICMP, &payload_icmp),
- PAYLOAD_PROTO(IPPROTO_ESP, &payload_esp),
- PAYLOAD_PROTO(IPPROTO_AH, &payload_ah),
- PAYLOAD_PROTO(IPPROTO_COMP, &payload_comp),
- PAYLOAD_PROTO(IPPROTO_UDP, &payload_udp),
- PAYLOAD_PROTO(IPPROTO_UDPLITE, &payload_udplite),
- PAYLOAD_PROTO(IPPROTO_TCP, &payload_tcp),
- PAYLOAD_PROTO(IPPROTO_DCCP, &payload_dccp),
- PAYLOAD_PROTO(IPPROTO_SCTP, &payload_sctp),
- },
- .templates = {
- [IPHDR_VERSION] = HDR_BITFIELD("version", &integer_type, 0, 4),
- [IPHDR_HDRLENGTH] = HDR_BITFIELD("hdrlength", &integer_type, 4, 4),
- [IPHDR_TOS] = IPHDR_FIELD("tos", tos),
- [IPHDR_LENGTH] = IPHDR_FIELD("length", tot_len),
- [IPHDR_ID] = IPHDR_FIELD("id", id),
- [IPHDR_FRAG_OFF] = IPHDR_FIELD("frag-off", frag_off),
- [IPHDR_TTL] = IPHDR_FIELD("ttl", ttl),
- [IPHDR_PROTOCOL] = INET_PROTOCOL("protocol", struct iphdr, protocol),
- [IPHDR_CHECKSUM] = IPHDR_FIELD("checksum", check),
- [IPHDR_SADDR] = IPHDR_ADDR("saddr", saddr),
- [IPHDR_DADDR] = IPHDR_ADDR("daddr", daddr),
- },
-};
-
-/*
- * ICMPv6
- */
-
-#include <netinet/icmp6.h>
-
-static const struct symbol_table icmp6_type_tbl = {
- .symbols = {
- SYMBOL("destination-unreachable", ICMP6_DST_UNREACH),
- SYMBOL("packet-too-big", ICMP6_PACKET_TOO_BIG),
- SYMBOL("time-exceeded", ICMP6_TIME_EXCEEDED),
- SYMBOL("param-problem", ICMP6_PARAM_PROB),
- SYMBOL("echo-request", ICMP6_ECHO_REQUEST),
- SYMBOL("echo-reply", ICMP6_ECHO_REPLY),
- SYMBOL("mld-listener-query", MLD_LISTENER_QUERY),
- SYMBOL("mld-listener-report", MLD_LISTENER_REPORT),
- SYMBOL("mld-listener-reduction", MLD_LISTENER_REDUCTION),
- SYMBOL("nd-router-solicit", ND_ROUTER_SOLICIT),
- SYMBOL("nd-router-advert", ND_ROUTER_ADVERT),
- SYMBOL("nd-neighbor-solicit", ND_NEIGHBOR_SOLICIT),
- SYMBOL("nd-neighbor-advert", ND_NEIGHBOR_ADVERT),
- SYMBOL("nd-redirect", ND_REDIRECT),
- SYMBOL("router-renumbering", ICMP6_ROUTER_RENUMBERING),
- SYMBOL_LIST_END
- },
-};
-
-static const struct datatype icmp6_type_type = {
- .type = TYPE_ICMP6_TYPE,
- .name = "icmpv6_type",
- .desc = "ICMPv6 type",
- .byteorder = BYTEORDER_BIG_ENDIAN,
- .size = BITS_PER_BYTE,
- .basetype = &integer_type,
- .sym_tbl = &icmp6_type_tbl,
-};
-
-#define ICMP6HDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct icmp6_hdr, __member)
-#define ICMP6HDR_TYPE(__name, __type, __member) \
- HDR_TYPE(__name, __type, struct icmp6_hdr, __member)
-
-const struct payload_desc payload_icmp6 = {
- .name = "icmpv6",
- .base = PAYLOAD_BASE_TRANSPORT_HDR,
- .templates = {
- [ICMP6HDR_TYPE] = ICMP6HDR_TYPE("type", &icmp6_type_type, icmp6_type),
- [ICMP6HDR_CODE] = ICMP6HDR_FIELD("code", icmp6_code),
- [ICMP6HDR_CHECKSUM] = ICMP6HDR_FIELD("checksum", icmp6_cksum),
- [ICMP6HDR_PPTR] = ICMP6HDR_FIELD("parameter-problem", icmp6_pptr),
- [ICMP6HDR_MTU] = ICMP6HDR_FIELD("packet-too-big", icmp6_mtu),
- [ICMP6HDR_ID] = ICMP6HDR_FIELD("id", icmp6_id),
- [ICMP6HDR_SEQ] = ICMP6HDR_FIELD("sequence", icmp6_seq),
- [ICMP6HDR_MAXDELAY] = ICMP6HDR_FIELD("max-delay", icmp6_maxdelay),
- },
-};
-
-/*
- * IPv6
- */
-
-#define IP6HDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct ipv6hdr, __member)
-#define IP6HDR_ADDR(__name, __member) \
- HDR_TYPE(__name, &ip6addr_type, struct ipv6hdr, __member)
-#define IP6HDR_PROTOCOL(__name, __member) \
- HDR_TYPE(__name, &inet_service_type, struct ipv6hdr, __member)
-
-const struct payload_desc payload_ip6 = {
- .name = "ip6",
- .base = PAYLOAD_BASE_NETWORK_HDR,
- .protocol_key = IP6HDR_NEXTHDR,
- .protocols = {
- PAYLOAD_PROTO(IPPROTO_ESP, &payload_esp),
- PAYLOAD_PROTO(IPPROTO_AH, &payload_ah),
- PAYLOAD_PROTO(IPPROTO_COMP, &payload_comp),
- PAYLOAD_PROTO(IPPROTO_UDP, &payload_udp),
- PAYLOAD_PROTO(IPPROTO_UDPLITE, &payload_udplite),
- PAYLOAD_PROTO(IPPROTO_TCP, &payload_tcp),
- PAYLOAD_PROTO(IPPROTO_DCCP, &payload_dccp),
- PAYLOAD_PROTO(IPPROTO_SCTP, &payload_sctp),
- PAYLOAD_PROTO(IPPROTO_ICMPV6, &payload_icmp6),
- },
- .templates = {
- [IP6HDR_VERSION] = HDR_BITFIELD("version", &integer_type, 0, 4),
- [IP6HDR_PRIORITY] = HDR_BITFIELD("priority", &integer_type, 4, 4),
- [IP6HDR_FLOWLABEL] = IP6HDR_FIELD("flowlabel", flow_lbl),
- [IP6HDR_LENGTH] = IP6HDR_FIELD("length", payload_len),
- [IP6HDR_NEXTHDR] = INET_PROTOCOL("nexthdr", struct ipv6hdr, nexthdr),
- [IP6HDR_HOPLIMIT] = IP6HDR_FIELD("hoplimit", hop_limit),
- [IP6HDR_SADDR] = IP6HDR_ADDR("saddr", saddr),
- [IP6HDR_DADDR] = IP6HDR_ADDR("daddr", daddr),
- },
-};
-
-/*
- * ARP
- */
-
-#include <net/if_arp.h>
-
-static const struct symbol_table arpop_tbl = {
- .symbols = {
- SYMBOL("request", ARPOP_REQUEST),
- SYMBOL("reply", ARPOP_REPLY),
- SYMBOL("rrequest", ARPOP_RREQUEST),
- SYMBOL("rreply", ARPOP_REPLY),
- SYMBOL("inrequest", ARPOP_InREQUEST),
- SYMBOL("inreply", ARPOP_InREPLY),
- SYMBOL("nak", ARPOP_NAK),
- SYMBOL_LIST_END
- },
-};
-
-static const struct datatype arpop_type = {
- .type = TYPE_ARPOP,
- .name = "arp_op",
- .desc = "ARP operation",
- .byteorder = BYTEORDER_BIG_ENDIAN,
- .size = 2 * BITS_PER_BYTE,
- .basetype = &integer_type,
- .sym_tbl = &arpop_tbl,
-};
-
-#define ARPHDR_TYPE(__name, __type, __member) \
- HDR_TYPE(__name, __type, struct arphdr, __member)
-#define ARPHDR_FIELD(__name, __member) \
- HDR_FIELD(__name, struct arphdr, __member)
-
-const struct payload_desc payload_arp = {
- .name = "arp",
- .base = PAYLOAD_BASE_NETWORK_HDR,
- .templates = {
- [ARPHDR_HRD] = ARPHDR_FIELD("htype", ar_hrd),
- [ARPHDR_PRO] = ARPHDR_TYPE("ptype", &ethertype_type, ar_pro),
- [ARPHDR_HLN] = ARPHDR_FIELD("hlen", ar_hln),
- [ARPHDR_PLN] = ARPHDR_FIELD("plen", ar_pln),
- [ARPHDR_OP] = ARPHDR_TYPE("operation", &arpop_type, ar_op),
- },
-};
-
-/*
- * VLAN
- */
-
-#include <net/ethernet.h>
-
-#define VLANHDR_BITFIELD(__name, __offset, __len) \
- HDR_BITFIELD(__name, &integer_type, __offset, __len)
-#define VLANHDR_TYPE(__name, __type, __member) \
- HDR_TYPE(__name, __type, struct vlan_hdr, __member)
-
-const struct payload_desc payload_vlan = {
- .name = "vlan",
- .base = PAYLOAD_BASE_LL_HDR,
- .protocol_key = VLANHDR_TYPE,
- .protocols = {
- PAYLOAD_PROTO(ETH_P_IP, &payload_ip),
- PAYLOAD_PROTO(ETH_P_ARP, &payload_arp),
- PAYLOAD_PROTO(ETH_P_IPV6, &payload_ip6),
- PAYLOAD_PROTO(ETH_P_8021Q, &payload_vlan),
-
- },
- .templates = {
- [VLANHDR_VID] = VLANHDR_BITFIELD("id", 0, 12),
- [VLANHDR_CFI] = VLANHDR_BITFIELD("cfi", 12, 1),
- [VLANHDR_PCP] = VLANHDR_BITFIELD("pcp", 13, 3),
- [VLANHDR_TYPE] = VLANHDR_TYPE("type", &ethertype_type, vlan_type),
- },
-};
-
-/*
- * Ethernet
- */
-
-const struct datatype etheraddr_type = {
- .type = TYPE_ETHERADDR,
- .name = "etheraddr",
- .desc = "Ethernet address",
- .byteorder = BYTEORDER_HOST_ENDIAN,
- .size = ETH_ALEN * BITS_PER_BYTE,
- .basetype = &lladdr_type,
-};
-
-static const struct symbol_table ethertype_tbl = {
- .symbols = {
- SYMBOL("ip", ETH_P_IP),
- SYMBOL("arp", ETH_P_ARP),
- SYMBOL("ipv6", ETH_P_IPV6),
- SYMBOL("vlan", ETH_P_8021Q),
- SYMBOL_LIST_END
- },
-};
-
-static struct error_record *ethertype_parse(const struct expr *sym,
- struct expr **res)
-{
- struct error_record *erec;
-
- erec = sym->dtype->basetype->parse(sym, res);
- if (erec != NULL)
- return erec;
- if (*res)
- return NULL;
- return symbolic_constant_parse(sym, &ethertype_tbl, res);
-}
-
-static void ethertype_print(const struct expr *expr)
-{
- return symbolic_constant_print(&ethertype_tbl, expr);
-}
-
-const struct datatype ethertype_type = {
- .type = TYPE_ETHERTYPE,
- .name = "ethertype",
- .desc = "Ethernet protocol",
- .byteorder = BYTEORDER_BIG_ENDIAN,
- .size = 2 * BITS_PER_BYTE,
- .basetype = &integer_type,
- .basefmt = "0x%.4Zx",
- .print = ethertype_print,
- .parse = ethertype_parse,
-};
-
-#define ETHHDR_TEMPLATE(__name, __dtype, __member) \
- HDR_TEMPLATE(__name, __dtype, struct ether_header, __member)
-#define ETHHDR_TYPE(__name, __member) \
- ETHHDR_TEMPLATE(__name, &ethertype_type, __member)
-#define ETHHDR_ADDR(__name, __member) \
- ETHHDR_TEMPLATE(__name, &etheraddr_type, __member)
-
-const struct payload_desc payload_eth = {
- .name = "eth",
- .base = PAYLOAD_BASE_LL_HDR,
- .protocol_key = ETHHDR_TYPE,
- .protocols = {
- PAYLOAD_PROTO(ETH_P_IP, &payload_ip),
- PAYLOAD_PROTO(ETH_P_ARP, &payload_arp),
- PAYLOAD_PROTO(ETH_P_IPV6, &payload_ip6),
- PAYLOAD_PROTO(ETH_P_8021Q, &payload_vlan),
- },
- .templates = {
- [ETHHDR_DADDR] = ETHHDR_ADDR("daddr", ether_dhost),
- [ETHHDR_SADDR] = ETHHDR_ADDR("saddr", ether_shost),
- [ETHHDR_TYPE] = ETHHDR_TYPE("type", ether_type),
- },
-};
-
-static void __init payload_init(void)
-{
- datatype_register(&icmp_type_type);
- datatype_register(&tcp_flag_type);
- datatype_register(&dccp_pkttype_type);
- datatype_register(&arpop_type);
- datatype_register(&ethertype_type);
- datatype_register(&icmp6_type_type);
-}