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| author | Denys Vlasenko <dvlasenk@redhat.com> | 2015-09-28 14:34:04 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-28 22:52:21 -0700 |
| commit | 2103d6b818fcdae15ffa04cf385f770e6c3892c3 (patch) | |
| tree | 090a856639c742e94a8553f853a36e821b40fe30 /net | |
| parent | 06a15f51cf3618e32a73871ee6a547ef7fd902b5 (diff) | |
| download | linux-2103d6b818fcdae15ffa04cf385f770e6c3892c3.tar.gz linux-2103d6b818fcdae15ffa04cf385f770e6c3892c3.tar.bz2 linux-2103d6b818fcdae15ffa04cf385f770e6c3892c3.zip | |
net: sctp: Don't use 64 kilobyte lookup table for four elements
Seemingly innocuous sctp_trans_state_to_prio_map[] array
is way bigger than it looks, since
"[SCTP_UNKNOWN] = 2" expands into "[0xffff] = 2" !
This patch replaces it with switch() statement.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Vlad Yasevich <vyasevich@gmail.com>
CC: Neil Horman <nhorman@tuxdriver.com>
CC: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
CC: linux-sctp@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/associola.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index 197c3f59ecbf..b00f1f9611d6 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -1208,20 +1208,22 @@ void sctp_assoc_update(struct sctp_association *asoc, * within this document. * * Our basic strategy is to round-robin transports in priorities - * according to sctp_state_prio_map[] e.g., if no such + * according to sctp_trans_score() e.g., if no such * transport with state SCTP_ACTIVE exists, round-robin through * SCTP_UNKNOWN, etc. You get the picture. */ -static const u8 sctp_trans_state_to_prio_map[] = { - [SCTP_ACTIVE] = 3, /* best case */ - [SCTP_UNKNOWN] = 2, - [SCTP_PF] = 1, - [SCTP_INACTIVE] = 0, /* worst case */ -}; - static u8 sctp_trans_score(const struct sctp_transport *trans) { - return sctp_trans_state_to_prio_map[trans->state]; + switch (trans->state) { + case SCTP_ACTIVE: + return 3; /* best case */ + case SCTP_UNKNOWN: + return 2; + case SCTP_PF: + return 1; + default: /* case SCTP_INACTIVE */ + return 0; /* worst case */ + } } static struct sctp_transport *sctp_trans_elect_tie(struct sctp_transport *trans1, |