diff options
| author | Alberto Gonzalez Iniesta <agi@inittab.org> | 2016-01-20 12:01:07 +0100 |
|---|---|---|
| committer | Alberto Gonzalez Iniesta <agi@inittab.org> | 2016-01-20 12:01:07 +0100 |
| commit | 9653b1bffea4e96c1eb7c1814e8bed21fea62321 (patch) | |
| tree | 485f02f91b424955a45c1cc12876c31d3d957f9b /src/openvpn/mss.c | |
| parent | 41ffafc126abd9af67061f4931b7614f3cb898b0 (diff) | |
Imported Upstream version 2.3.10upstream/2.3.10
Diffstat (limited to 'src/openvpn/mss.c')
| -rw-r--r-- | src/openvpn/mss.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/src/openvpn/mss.c b/src/openvpn/mss.c index 64fd722..7298c7b 100644 --- a/src/openvpn/mss.c +++ b/src/openvpn/mss.c @@ -129,7 +129,7 @@ mss_fixup_dowork (struct buffer *buf, uint16_t maxmss) { int hlen, olen, optlen; uint8_t *opt; - uint16_t *mss; + uint16_t mssval; int accumulate; struct openvpn_tcphdr *tc; @@ -159,14 +159,13 @@ mss_fixup_dowork (struct buffer *buf, uint16_t maxmss) if (*opt == OPENVPN_TCPOPT_MAXSEG) { if (optlen != OPENVPN_TCPOLEN_MAXSEG) continue; - mss = (uint16_t *)(opt + 2); - if (ntohs (*mss) > maxmss) { - dmsg (D_MSS, "MSS: %d -> %d", - (int) ntohs (*mss), - (int) maxmss); - accumulate = *mss; - *mss = htons (maxmss); - accumulate -= *mss; + mssval = (opt[2]<<8)+opt[3]; + if (mssval > maxmss) { + dmsg (D_MSS, "MSS: %d -> %d", (int) mssval, (int) maxmss); + accumulate = htons(mssval); + opt[2] = (maxmss>>8)&0xff; + opt[3] = maxmss&0xff; + accumulate -= htons(maxmss); ADJUST_CHECKSUM (accumulate, tc->check); } } |