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| author | Stefano Brivio <sbrivio@redhat.com> | 2021-08-12 15:42:43 +0200 |
|---|---|---|
| committer | Stefano Brivio <sbrivio@redhat.com> | 2021-09-01 17:00:27 +0200 |
| commit | 1e49d194d01788afbc4b8216e27c794651a4facf (patch) | |
| tree | 3397d4b687a74fe9552e057138c3a795917a5afa /ndp.c | |
| parent | 1b1b27c06a27067a7d7a380f1df545e72268c411 (diff) | |
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passt, pasta: Introduce command-line options and port re-mapping
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'ndp.c')
| -rw-r--r-- | ndp.c | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -64,6 +64,9 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len) ih->icmp6_type < RS || ih->icmp6_type > NA) return 0; + if (c->no_ndp) + return 1; + ehr = (struct ethhdr *)buf; ip6hr = (struct ipv6hdr *)(ehr + 1); ihr = (struct icmp6hdr *)(ip6hr + 1); @@ -91,6 +94,9 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len) size_t len = 0; int i, n; + if (c->no_ra) + return 1; + info("NDP: received RS, sending RA"); ihr->icmp6_type = RA; ihr->icmp6_code = 0; @@ -110,6 +116,14 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len) memcpy(p, &c->addr6, 8); /* prefix */ p += 16; + if (c->mtu) { + *p++ = 5; /* type */ + *p++ = 1; /* length */ + p += 2; /* reserved */ + *(uint32_t *)p = htonl(c->mtu); /* MTU */ + p += 4; + } + for (n = 0; !IN6_IS_ADDR_UNSPECIFIED(&c->dns6[n]); n++); if (n) { *p++ = 25; /* RDNSS */ |