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| author | Al Viro <viro@ftp.linux.org.uk> | 2008-03-16 22:22:54 +0000 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-03-26 00:18:46 -0400 |
| commit | fa3a6cb4a6feacd712ca58fd1c6e99b33fde5d5d (patch) | |
| tree | 9744e665b468b29d48218d5e9683fdc2c0752c2c /drivers | |
| parent | 2f220e305b23ab277aa0f91e2a65978f5cc1a785 (diff) | |
| download | op-kernel-dev-fa3a6cb4a6feacd712ca58fd1c6e99b33fde5d5d.zip op-kernel-dev-fa3a6cb4a6feacd712ca58fd1c6e99b33fde5d5d.tar.gz | |
annotate cxgb3 (ab)uses of skb->priority/skb->csum
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/cxgb3/cxgb3_offload.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/net/cxgb3/cxgb3_offload.c b/drivers/net/cxgb3/cxgb3_offload.c index 901c824..ff9c013 100644 --- a/drivers/net/cxgb3/cxgb3_offload.c +++ b/drivers/net/cxgb3/cxgb3_offload.c @@ -833,10 +833,26 @@ static int do_trace(struct t3cdev *dev, struct sk_buff *skb) return 0; } +/* + * That skb would better have come from process_responses() where we abuse + * ->priority and ->csum to carry our data. NB: if we get to per-arch + * ->csum, the things might get really interesting here. + */ + +static inline u32 get_hwtid(struct sk_buff *skb) +{ + return ntohl((__force __be32)skb->priority) >> 8 & 0xfffff; +} + +static inline u32 get_opcode(struct sk_buff *skb) +{ + return G_OPCODE(ntohl((__force __be32)skb->csum)); +} + static int do_term(struct t3cdev *dev, struct sk_buff *skb) { - unsigned int hwtid = ntohl(skb->priority) >> 8 & 0xfffff; - unsigned int opcode = G_OPCODE(ntohl(skb->csum)); + unsigned int hwtid = get_hwtid(skb); + unsigned int opcode = get_opcode(skb); struct t3c_tid_entry *t3c_tid; t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); @@ -914,7 +930,7 @@ int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n) { while (n--) { struct sk_buff *skb = *skbs++; - unsigned int opcode = G_OPCODE(ntohl(skb->csum)); + unsigned int opcode = get_opcode(skb); int ret = cpl_handlers[opcode] (dev, skb); #if VALIDATE_TID |
