diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-05-30 12:52:49 +0200 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-05-31 17:57:35 +0200 |
commit | bbe851eb15b19992ce5cc42990a33fe22325a236 (patch) | |
tree | 04053e9e96294db8557e934ac2cefc7dc5b4ebc7 /src/mnl.c | |
parent | bcf60fb819bfbfa8607b52a4eb8a31c27a1622a7 (diff) |
mnl: mnl_set_rcvbuffer() skips buffer size update if it is too small
Check for existing buffer size, if this is larger than the newer buffer
size, skip this size update.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/mnl.c')
-rw-r--r-- | src/mnl.c | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -233,10 +233,21 @@ static void mnl_set_sndbuffer(const struct mnl_socket *nl, nlbuffsiz = newbuffsiz; } +static unsigned int nlsndbufsiz; + static int mnl_set_rcvbuffer(const struct mnl_socket *nl, size_t bufsiz) { + socklen_t len = sizeof(nlsndbufsiz); int ret; + if (!nlsndbufsiz) { + getsockopt(mnl_socket_get_fd(nl), SOL_SOCKET, SO_RCVBUF, + &nlsndbufsiz, &len); + } + + if (nlsndbufsiz >= bufsiz) + return 0; + ret = setsockopt(mnl_socket_get_fd(nl), SOL_SOCKET, SO_RCVBUFFORCE, &bufsiz, sizeof(socklen_t)); if (ret < 0) { |