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| author | Kumar Sanghvi <kumaras@chelsio.com> | 2013-12-18 16:38:19 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-22 18:09:07 -0500 |
| commit | b6f8eaece6d5f0247931b6dac140e6cf876f48de (patch) | |
| tree | adc96c07143e74b153a33dfe65420531af4380bf | |
| parent | 6eb3c2822e2c5ef8f1a215c44ac451653aec0c09 (diff) | |
| download | linux-b6f8eaece6d5f0247931b6dac140e6cf876f48de.tar.gz linux-b6f8eaece6d5f0247931b6dac140e6cf876f48de.tar.bz2 linux-b6f8eaece6d5f0247931b6dac140e6cf876f48de.zip | |
cxgb4: Reserve stid 0 for T4/T5 adapters
When creating offload server entries, an IPv6 passive connection request
can trigger a reply with a null STID, whereas the driver would expect
the reply 'STID to match the value used for the request.
This happens due to h/w limitation on T4 and T5.
This patch ensures that STID 0 is never used if the stid range starts
from zero.
Based on original work by Santosh Rastapur <santosh@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index d6b12e035a7d..f36f8e1a101c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -3134,6 +3134,7 @@ static int tid_init(struct tid_info *t) size_t size; unsigned int stid_bmap_size; unsigned int natids = t->natids; + struct adapter *adap = container_of(t, struct adapter, tids); stid_bmap_size = BITS_TO_LONGS(t->nstids + t->nsftids); size = t->ntids * sizeof(*t->tid_tab) + @@ -3167,6 +3168,11 @@ static int tid_init(struct tid_info *t) t->afree = t->atid_tab; } bitmap_zero(t->stid_bmap, t->nstids + t->nsftids); + /* Reserve stid 0 for T4/T5 adapters */ + if (!t->stid_base && + (is_t4(adap->params.chip) || is_t5(adap->params.chip))) + __set_bit(0, t->stid_bmap); + return 0; } |