diff options
Diffstat (limited to 'system-linux.c')
| -rw-r--r-- | system-linux.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/system-linux.c b/system-linux.c index 8cfad3c..60f55ee 100644 --- a/system-linux.c +++ b/system-linux.c @@ -2456,10 +2456,11 @@ static int system_add_gre_tunnel(const char *name, const char *kind, struct nl_msg *nlm; struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, }; struct blob_attr *cur; - uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0; + uint32_t ikey = 0, okey = 0, flowinfo = 0, flags6 = IP6_TNL_F_IGN_ENCAP_LIMIT; uint16_t iflags = 0, oflags = 0; uint8_t tos = 0; int ret = 0, ttl = 0; + unsigned encap_limit = 0; nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE); if (!nlm) @@ -2503,7 +2504,7 @@ static int system_add_gre_tunnel(const char *name, const char *kind, tos = uval; } else { if (v6) - flags |= IP6_TNL_F_USE_ORIG_TCLASS; + flags6 |= IP6_TNL_F_USE_ORIG_TCLASS; else tos = 1; } @@ -2544,6 +2545,23 @@ static int system_add_gre_tunnel(const char *name, const char *kind, if (blobmsg_get_bool(cur)) oflags |= GRE_SEQ; } + + if ((cur = tb_data[GRE_DATA_ENCAPLIMIT])) { + char *str = blobmsg_get_string(cur); + + if (strcmp(str, "ignore")) { + char *e; + + encap_limit = strtoul(str, &e, 0); + + if (e == str || *e || encap_limit > 255) { + ret = -EINVAL; + goto failure; + } + + flags6 &= ~IP6_TNL_F_IGN_ENCAP_LIMIT; + } + } } if (v6) { @@ -2563,13 +2581,15 @@ static int system_add_gre_tunnel(const char *name, const char *kind, } nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf); } - nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, 4); + + if (!(flags6 & IP6_TNL_F_IGN_ENCAP_LIMIT)) + nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, encap_limit); if (flowinfo) nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo); - if (flags) - nla_put_u32(nlm, IFLA_GRE_FLAGS, flags); + if (flags6) + nla_put_u32(nlm, IFLA_GRE_FLAGS, flags6); if (!ttl) ttl = 64; |