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nfqws2: old kernels compat

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bol-van
2026-02-16 20:51:39 +03:00
parent 2120264e0b
commit 4b7ff505e4
2 changed files with 19 additions and 2 deletions
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3
nfq2/darkmagic.c
View File

@@ -1880,8 +1880,9 @@ static int rawsend_socket(sa_family_t family)
}
if (family==AF_INET && setsockopt(*sock, IPPROTO_IP, IP_NODEFRAG, &yes, sizeof(yes)) == -1)
{
// since 2.6.36
DLOG_PERROR("rawsend: setsockopt(IP_NODEFRAG)");
goto exiterr;
//goto exiterr;
}
if (family==AF_INET && setsockopt(*sock, IPPROTO_IP, IP_FREEBIND, &yes, sizeof(yes)) == -1)
{

18
nfq2/nfqws.c
View File

@@ -317,8 +317,14 @@ static bool nfq_init(struct nfq_handle **h, struct nfq_q_handle **qh, uint8_t *m
goto exiterr;
}
// linux kernels pass both ipv4 and ipv6 even if only AF_INET is boumd
// linux 3.8 - bind calls are NOOP. linux 3.8- - secondary bind to AF_INET6 will fail
// old kernels seem to require both binds to ipv4 and ipv6. may not work without unbind
DLOG_CONDUP("unbinding existing nf_queue handler for AF_INET (if any)\n");
if (nfq_unbind_pf(*h, AF_INET) < 0) {
DLOG_PERROR("nfq_unbind_pf(AF_INET)");
goto exiterr;
}
DLOG_CONDUP("binding nfnetlink_queue as nf_queue handler for AF_INET\n");
if (nfq_bind_pf(*h, AF_INET) < 0) {
@@ -326,6 +332,16 @@ static bool nfq_init(struct nfq_handle **h, struct nfq_q_handle **qh, uint8_t *m
goto exiterr;
}
DLOG_CONDUP("unbinding existing nf_queue handler for AF_INET6 (if any)\n");
if (nfq_unbind_pf(*h, AF_INET6) < 0) {
DLOG_PERROR("nfq_unbind_pf(AF_INET6)");
}
DLOG_CONDUP("binding nfnetlink_queue as nf_queue handler for AF_INET6\n");
if (nfq_bind_pf(*h, AF_INET6) < 0) {
DLOG_PERROR("nfq_bind_pf(AF_INET6)");
}
DLOG_CONDUP("binding this socket to queue '%u'\n", params.qnum);
*qh = nfq_create_queue(*h, params.qnum, &nfq_cb, mod_buffer);
if (!*qh) {