From 57c2b152c5f0866be5bf1acda2f341ba26ba9448 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?M=C3=A1t=C3=A9=20Eckl?= Date: Wed, 5 Sep 2018 11:16:44 +0200 Subject: src: add ipsec (xfrm) expression MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows matching on ipsec tunnel/beet addresses in xfrm state associated with a packet, ipsec request id and the SPI. Examples: ipsec in ip saddr 192.168.1.0/24 ipsec out ip6 daddr @endpoints ipsec in spi 1-65536 Joint work with Florian Westphal. Cc: Máté Eckl Signed-off-by: Florian Westphal --- src/netlink_linearize.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/netlink_linearize.c') diff --git a/src/netlink_linearize.c b/src/netlink_linearize.c index 0bd946a1..0ac51bd0 100644 --- a/src/netlink_linearize.c +++ b/src/netlink_linearize.c @@ -679,6 +679,20 @@ static void netlink_gen_immediate(struct netlink_linearize_ctx *ctx, nftnl_rule_add_expr(ctx->nlr, nle); } +static void netlink_gen_xfrm(struct netlink_linearize_ctx *ctx, + const struct expr *expr, + enum nft_registers dreg) +{ + struct nftnl_expr *nle; + + nle = alloc_nft_expr("xfrm"); + netlink_put_register(nle, NFTNL_EXPR_XFRM_DREG, dreg); + nftnl_expr_set_u32(nle, NFTNL_EXPR_XFRM_KEY, expr->xfrm.key); + nftnl_expr_set_u8(nle, NFTNL_EXPR_XFRM_DIR, expr->xfrm.direction); + nftnl_expr_set_u32(nle, NFTNL_EXPR_XFRM_SPNUM, expr->xfrm.spnum); + nftnl_rule_add_expr(ctx->nlr, nle); +} + static void netlink_gen_expr(struct netlink_linearize_ctx *ctx, const struct expr *expr, enum nft_registers dreg) @@ -721,6 +735,8 @@ static void netlink_gen_expr(struct netlink_linearize_ctx *ctx, return netlink_gen_socket(ctx, expr, dreg); case EXPR_OSF: return netlink_gen_osf(ctx, expr, dreg); + case EXPR_XFRM: + return netlink_gen_xfrm(ctx, expr, dreg); default: BUG("unknown expression type %s\n", expr->ops->name); } -- cgit v1.2.3