cxgb4: Add LE hash collision bug fix path in LLD driver
It supports establishing passive open connection through firmware filter work
request. Passive open connection will go through this path as now instead of
listening server we create a server filter which will redirect the incoming SYN
packet to the offload queue.
It divides filter region into regular filters and server filter portion. It
introduces new server filter region which will be exclusively used for creating
server filters. This region will not overlap with regular filter region.
It provides new API cxgb4_alloc_sftid in LLD for getting stid in case of LE
hash collision path. This new stid will be used to open server filter in the
filter region.
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index 59a6133..065bbd5 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -131,7 +131,7 @@
static inline void *lookup_stid(const struct tid_info *t, unsigned int stid)
{
stid -= t->stid_base;
- return stid < t->nstids ? t->stid_tab[stid].data : NULL;
+ return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL;
}
static inline void cxgb4_insert_tid(struct tid_info *t, void *data,
@@ -143,6 +143,7 @@
int cxgb4_alloc_atid(struct tid_info *t, void *data);
int cxgb4_alloc_stid(struct tid_info *t, int family, void *data);
+int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data);
void cxgb4_free_atid(struct tid_info *t, unsigned int atid);
void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family);
void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid);
@@ -151,7 +152,10 @@
int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
__be32 sip, __be16 sport, unsigned int queue);
-
+int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
+ __be32 sip, __be16 sport, unsigned int queue);
+int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
+ unsigned int queue, bool ipv6);
static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
{
skb_set_queue_mapping(skb, (queue << 1) | prio);
@@ -223,9 +227,16 @@
unsigned int iscsi_iolen; /* iSCSI max I/O length */
unsigned short udb_density; /* # of user DB/page */
unsigned short ucq_density; /* # of user CQs/page */
+ unsigned short filt_mode; /* filter optional components */
+ unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */
+ /* scheduler queue */
void __iomem *gts_reg; /* address of GTS register */
void __iomem *db_reg; /* address of kernel doorbell */
int dbfifo_int_thresh; /* doorbell fifo int threshold */
+ unsigned int sge_pktshift; /* Padding between CPL and */
+ /* packet data */
+ bool enable_fw_ofld_conn; /* Enable connection through fw */
+ /* WR */
};
struct cxgb4_uld_info {