diff options
| author | Tomer Tayar <tomer.tayar@cavium.com> | 2019-01-28 20:27:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-01-28 21:58:41 +0300 |
| commit | 64515dc899df898991b2b7e56f69f56f014ea888 (patch) | |
| tree | b271e04771c8b662279bda328b35ba0bf4e22bc4 /drivers/net/ethernet/qlogic/qed/qed_spq.c | |
| parent | 666db4862f2d373bb054b9fdde3d0ee1e7cd18c5 (diff) | |
| download | linux-64515dc899df898991b2b7e56f69f56f014ea888.tar.xz | |
qed: Add infrastructure for error detection and recovery
This patch adds the detection and handling of a parity error ("process kill
event"), including the update of the protocol drivers, and the prevention
of any HW access that will lead to device access towards the host while
recovery is in progress.
It also provides the means for the protocol drivers to trigger a recovery
process on their decision.
Signed-off-by: Tomer Tayar <tomer.tayar@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_spq.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_spq.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c index eb88bbc6b193..3e0f7c46bb1b 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_spq.c +++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c @@ -790,6 +790,17 @@ static int qed_spq_pend_post(struct qed_hwfn *p_hwfn) SPQ_HIGH_PRI_RESERVE_DEFAULT); } +static void qed_spq_recov_set_ret_code(struct qed_spq_entry *p_ent, + u8 *fw_return_code) +{ + if (!fw_return_code) + return; + + if (p_ent->elem.hdr.protocol_id == PROTOCOLID_ROCE || + p_ent->elem.hdr.protocol_id == PROTOCOLID_IWARP) + *fw_return_code = RDMA_RETURN_OK; +} + /* Avoid overriding of SPQ entries when getting out-of-order completions, by * marking the completions in a bitmap and increasing the chain consumer only * for the first successive completed entries. @@ -825,6 +836,17 @@ int qed_spq_post(struct qed_hwfn *p_hwfn, return -EINVAL; } + if (p_hwfn->cdev->recov_in_prog) { + DP_VERBOSE(p_hwfn, + QED_MSG_SPQ, + "Recovery is in progress. Skip spq post [cmd %02x protocol %02x]\n", + p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id); + + /* Let the flow complete w/o any error handling */ + qed_spq_recov_set_ret_code(p_ent, fw_return_code); + return 0; + } + /* Complete the entry */ rc = qed_spq_fill_entry(p_hwfn, p_ent); |