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| author | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2010-09-19 22:06:50 +0400 |
|---|---|---|
| committer | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2010-09-21 14:14:25 +0400 |
| commit | 4874c131d79695e3d372042781a408a1a8a762d8 (patch) | |
| tree | e3c6bf89f191b47e019f063d16c3e5d6c4fc0623 /net/dccp/options.c | |
| parent | 462fb2af9788a82a534f8184abfde31574e1cfa0 (diff) | |
| download | linux-4874c131d79695e3d372042781a408a1a8a762d8.tar.xz | |
dccp: Add packet type information to CCID-specific option parsing
This
1. adds packet type information to ccid_hc_{rx,tx}_parse_options(). This is
necessary, since table 3 in RFC 4340, 5.8 leaves it to the CCIDs to state
which options may (not) appear on what packet type.
2. adds such a check for CCID-3's {Loss Event, Receive} Rate as specified in
RFC 4340 8.3 ("Receive Rate options MUST NOT be sent on DCCP-Data packets")
and 8.5 ("Loss Event Rate options MUST NOT be sent on DCCP-Data packets").
3. removes an unused argument `idx' from ccid_hc_{rx,tx}_parse_options(). This
is also no longer necessary, since the CCID-specific option-parsing routines
are passed every single parameter of the type-length-value option encoding.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Diffstat (limited to 'net/dccp/options.c')
| -rw-r--r-- | net/dccp/options.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/net/dccp/options.c b/net/dccp/options.c index bfda087bd90d..e4983e3d2616 100644 --- a/net/dccp/options.c +++ b/net/dccp/options.c @@ -226,23 +226,15 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq, dccp_pr_debug("%s rx opt: ELAPSED_TIME=%d\n", dccp_role(sk), elapsed_time); break; - case 128 ... 191: { - const u16 idx = value - options; - + case 128 ... 191: if (ccid_hc_rx_parse_options(dp->dccps_hc_rx_ccid, sk, - opt, len, idx, - value) != 0) + pkt_type, opt, value, len)) goto out_invalid_option; - } break; - case 192 ... 255: { - const u16 idx = value - options; - + case 192 ... 255: if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk, - opt, len, idx, - value) != 0) + pkt_type, opt, value, len)) goto out_invalid_option; - } break; default: DCCP_CRIT("DCCP(%p): option %d(len=%d) not " |