From a5e922d31258fcd641ee67cf2ebd865e7f1eb4ea Mon Sep 17 00:00:00 2001 From: Arturo Borrero Date: Fri, 22 Aug 2014 11:39:56 +0200 Subject: examples: nft-table-del: add batching support Add batching support so this code example works with current kernels. Signed-off-by: Arturo Borrero Gonzalez Signed-off-by: Pablo Neira Ayuso --- examples/nft-table-del.c | 36 ++++++++++++++++++++++++++++++------ 1 file changed, 30 insertions(+), 6 deletions(-) (limited to 'examples') diff --git a/examples/nft-table-del.c b/examples/nft-table-del.c index ae7db27..334d20b 100644 --- a/examples/nft-table-del.c +++ b/examples/nft-table-del.c @@ -55,9 +55,10 @@ int main(int argc, char *argv[]) struct mnl_socket *nl; char buf[MNL_SOCKET_BUFFER_SIZE]; struct nlmsghdr *nlh; - uint32_t portid, seq, family; + uint32_t portid, seq, table_seq, family; struct nft_table *t; - int ret; + struct mnl_nlmsg_batch *batch; + int ret, batching; if (argc != 3) { fprintf(stderr, "%s \n", argv[0]); @@ -68,14 +69,34 @@ int main(int argc, char *argv[]) if (t == NULL) exit(EXIT_FAILURE); + batching = nft_batch_is_supported(); + if (batching < 0) { + perror("cannot talk to nfnetlink"); + exit(EXIT_FAILURE); + } seq = time(NULL); + batch = mnl_nlmsg_batch_start(buf, sizeof(buf)); + + if (batching) { + nft_batch_begin(mnl_nlmsg_batch_current(batch), seq++); + mnl_nlmsg_batch_next(batch); + } + + table_seq = seq; family = nft_table_attr_get_u32(t, NFT_TABLE_ATTR_FAMILY); - nlh = nft_table_nlmsg_build_hdr(buf, NFT_MSG_DELTABLE, family, - NLM_F_ACK, seq); + nlh = nft_table_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch), + NFT_MSG_DELTABLE, family, + NLM_F_ACK, seq++); nft_table_nlmsg_build_payload(nlh, t); + mnl_nlmsg_batch_next(batch); nft_table_free(t); + if (batching) { + nft_batch_end(mnl_nlmsg_batch_current(batch), seq++); + mnl_nlmsg_batch_next(batch); + } + nl = mnl_socket_open(NETLINK_NETFILTER); if (nl == NULL) { perror("mnl_socket_open"); @@ -88,14 +109,17 @@ int main(int argc, char *argv[]) } portid = mnl_socket_get_portid(nl); - if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) { + if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch), + mnl_nlmsg_batch_size(batch)) < 0) { perror("mnl_socket_send"); exit(EXIT_FAILURE); } + mnl_nlmsg_batch_stop(batch); + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); while (ret > 0) { - ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL); + ret = mnl_cb_run(buf, ret, table_seq, portid, NULL, NULL); if (ret <= 0) break; ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); -- cgit v1.2.3