aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGerrit Renker <gerrit@erg.abdn.ac.uk>2008-09-04 07:30:19 +0200
committerGerrit Renker <gerrit@erg.abdn.ac.uk>2008-09-04 07:45:34 +0200
commitf10ecaee6dc2c6d56783462b2a82e98bc81b55f4 (patch)
treed8c8049b47c2a8bfa74a6308da21c6d873cb9131
parentce177ae2e6b196659e93a9408cc1f5f13f206d13 (diff)
dccp: Replace magic CCID-specific numbers by symbolic constants
The constants DCCPO_{MIN,MAX}_CCID_SPECIFIC are nowhere used in the code, but instead for the CCID-specific options numbers are used. This patch unifies the use of CCID-specific option numbers, by adding symbolic names reflecting the definitions in RFC 4340, 10.3. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
-rw-r--r--include/linux/dccp.h6
-rw-r--r--net/dccp/options.c13
2 files changed, 7 insertions, 12 deletions
diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 7434a8353e2..7187bd8a75f 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -165,8 +165,10 @@ enum {
DCCPO_TIMESTAMP_ECHO = 42,
DCCPO_ELAPSED_TIME = 43,
DCCPO_MAX = 45,
- DCCPO_MIN_CCID_SPECIFIC = 128,
- DCCPO_MAX_CCID_SPECIFIC = 255,
+ DCCPO_MIN_RX_CCID_SPECIFIC = 128, /* from sender to receiver */
+ DCCPO_MAX_RX_CCID_SPECIFIC = 191,
+ DCCPO_MIN_TX_CCID_SPECIFIC = 192, /* from receiver to sender */
+ DCCPO_MAX_TX_CCID_SPECIFIC = 255,
};
/* maximum size of a single TLV-encoded DCCP option (sans type/len bytes) */
#define DCCP_SINGLE_OPT_MAXLEN 253
diff --git a/net/dccp/options.c b/net/dccp/options.c
index b102774694c..e1c94e2b8be 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -96,18 +96,11 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
}
/*
- * CCID-Specific Options (from RFC 4340, sec. 10.3):
- *
- * Option numbers 128 through 191 are for options sent from the
- * HC-Sender to the HC-Receiver; option numbers 192 through 255
- * are for options sent from the HC-Receiver to the HC-Sender.
- *
* CCID-specific options are ignored during connection setup, as
* negotiation may still be in progress (see RFC 4340, 10.3).
* The same applies to Ack Vectors, as these depend on the CCID.
- *
*/
- if (dreq != NULL && (opt >= 128 ||
+ if (dreq != NULL && (opt >= DCCPO_MIN_RX_CCID_SPECIFIC ||
opt == DCCPO_ACK_VECTOR_0 || opt == DCCPO_ACK_VECTOR_1))
goto ignore_option;
@@ -226,12 +219,12 @@ 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:
+ case DCCPO_MIN_RX_CCID_SPECIFIC ... DCCPO_MAX_RX_CCID_SPECIFIC:
if (ccid_hc_rx_parse_options(dp->dccps_hc_rx_ccid, sk,
pkt_type, opt, value, len))
goto out_invalid_option;
break;
- case 192 ... 255:
+ case DCCPO_MIN_TX_CCID_SPECIFIC ... DCCPO_MAX_TX_CCID_SPECIFIC:
if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk,
pkt_type, opt, value, len))
goto out_invalid_option;