From: Kumar Sanghvi Date: Wed, 18 Dec 2013 11:08:21 +0000 (+0530) Subject: cxgb4: Assign filter server TIDs properly X-Git-Tag: upstream/snapshot3+hdmi~3715^2~18^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=470c60c47a03f74f0ec1a83576eb6000025634a9;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git cxgb4: Assign filter server TIDs properly The LE workaround code is incorrectly reusing the TCAM TIDs (meant for allocation by firmware in case of hash collisions) for filter servers. This patch assigns the filter server TIDs properly starting from sftid_base index. Based on original work by Santosh Rastapur Signed-off-by: Kumar Sanghvi Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index df1d6b8..f4f46fc 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -3012,7 +3012,8 @@ int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data) } if (stid >= 0) { t->stid_tab[stid].data = data; - stid += t->stid_base; + stid -= t->nstids; + stid += t->sftid_base; t->stids_in_use++; } spin_unlock_bh(&t->stid_lock); @@ -3024,7 +3025,14 @@ EXPORT_SYMBOL(cxgb4_alloc_sftid); */ void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family) { - stid -= t->stid_base; + /* Is it a server filter TID? */ + if (t->nsftids && (stid >= t->sftid_base)) { + stid -= t->sftid_base; + stid += t->nstids; + } else { + stid -= t->stid_base; + } + spin_lock_bh(&t->stid_lock); if (family == PF_INET) __clear_bit(stid, t->stid_bmap); @@ -4185,7 +4193,7 @@ int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid, adap = netdev2adap(dev); /* Adjust stid to correct filter index */ - stid -= adap->tids.nstids; + stid -= adap->tids.sftid_base; stid += adap->tids.nftids; /* Check to make sure the filter requested is writable ... @@ -4248,7 +4256,7 @@ int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid, adap = netdev2adap(dev); /* Adjust stid to correct filter index */ - stid -= adap->tids.nstids; + stid -= adap->tids.sftid_base; stid += adap->tids.nftids; f = &adap->tids.ftid_tab[stid]; diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h index 6f21f24..4dd0a82 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h @@ -131,7 +131,14 @@ static inline void *lookup_atid(const struct tid_info *t, unsigned int atid) static inline void *lookup_stid(const struct tid_info *t, unsigned int stid) { - stid -= t->stid_base; + /* Is it a server filter TID? */ + if (t->nsftids && (stid >= t->sftid_base)) { + stid -= t->sftid_base; + stid += t->nstids; + } else { + stid -= t->stid_base; + } + return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL; }