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cxgb4: Free completed tx skbs promptly 

Description of problem:
The NIC card is not reporting back to the driver the transmitted skbs,
so they get stuck in the TX ring causing issues with reference
counters in other kernel components.

Developed a new Automatic Egress Queue Update firmware facility to slowly tick
through Egress Queues and send back any outstanding CIDX Updates which are
laying around.

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2014-08-21 17:04:46 +05:30 committed by David S. Miller
parent 215a004c61
commit 08f1a1b9d1
3 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/chelsio/cxgb4/sge.c
View File

@ -2303,7 +2303,8 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq,
FW_EQ_ETH_CMD_PFN(adap->fn) | FW_EQ_ETH_CMD_VFN(0));
c.alloc_to_len16 = htonl(FW_EQ_ETH_CMD_ALLOC |
FW_EQ_ETH_CMD_EQSTART | FW_LEN16(c));
c.viid_pkd = htonl(FW_EQ_ETH_CMD_VIID(pi->viid));
c.viid_pkd = htonl(FW_EQ_ETH_CMD_AUTOEQUEQE |
FW_EQ_ETH_CMD_VIID(pi->viid));
c.fetchszm_to_iqid = htonl(FW_EQ_ETH_CMD_HOSTFCMODE(2) |
FW_EQ_ETH_CMD_PCIECHN(pi->tx_chan) |
FW_EQ_ETH_CMD_FETCHRO(1) |

1
drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
View File

@ -1227,6 +1227,7 @@ struct fw_eq_eth_cmd {
#define FW_EQ_ETH_CMD_CIDXFTHRESH(x) ((x) << 16)
#define FW_EQ_ETH_CMD_EQSIZE(x) ((x) << 0)
#define FW_EQ_ETH_CMD_AUTOEQUEQE (1U << 30)
#define FW_EQ_ETH_CMD_VIID(x) ((x) << 16)
struct fw_eq_ctrl_cmd {

3
drivers/net/ethernet/chelsio/cxgb4vf/sge.c
View File

@ -2250,7 +2250,8 @@ int t4vf_sge_alloc_eth_txq(struct adapter *adapter, struct sge_eth_txq *txq,
cmd.alloc_to_len16 = cpu_to_be32(FW_EQ_ETH_CMD_ALLOC |
FW_EQ_ETH_CMD_EQSTART |
FW_LEN16(cmd));
cmd.viid_pkd = cpu_to_be32(FW_EQ_ETH_CMD_VIID(pi->viid));
cmd.viid_pkd = cpu_to_be32(FW_EQ_ETH_CMD_AUTOEQUEQE |
FW_EQ_ETH_CMD_VIID(pi->viid));
cmd.fetchszm_to_iqid =
cpu_to_be32(FW_EQ_ETH_CMD_HOSTFCMODE(SGE_HOSTFCMODE_STPG) |
FW_EQ_ETH_CMD_PCIECHN(pi->port_id) |