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IB/srp: Wrap OUI checking for workarounds in helper functions 

Wrap the checking for Mellanox and Topspin OUIs to decide whether to
use a workaround into helper functions.  This will make it cleaner to
add a new OUI to check (as we need to do now that some targets with a
Cisco OUI still need the Topspin workarounds).

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2007-08-03 10:45:18 -07:00
parent 699924b1e1
commit 5d7cbfd631
1 changed files with 20 additions and 9 deletions
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29
drivers/infiniband/ulp/srp/ib_srp.c
View File

@ -75,16 +75,12 @@ module_param(topspin_workarounds, int, 0444);
MODULE_PARM_DESC(topspin_workarounds,
"Enable workarounds for Topspin/Cisco SRP target bugs if != 0");
static const u8 topspin_oui[3] = { 0x00, 0x05, 0xad };
static int mellanox_workarounds = 1;
module_param(mellanox_workarounds, int, 0444);
MODULE_PARM_DESC(mellanox_workarounds,
"Enable workarounds for Mellanox SRP target bugs if != 0");
static const u8 mellanox_oui[3] = { 0x00, 0x02, 0xc9 };
static void srp_add_one(struct ib_device *device);
static void srp_remove_one(struct ib_device *device);
static void srp_completion(struct ib_cq *cq, void *target_ptr);
@ -108,6 +104,22 @@ static const char *srp_target_info(struct Scsi_Host *host)
return host_to_target(host)->target_name;
}
static int srp_target_is_topspin(struct srp_target_port *target)
{
static const u8 topspin_oui[3] = { 0x00, 0x05, 0xad };
return topspin_workarounds &&
!memcmp(&target->ioc_guid, topspin_oui, sizeof topspin_oui);
}
static int srp_target_is_mellanox(struct srp_target_port *target)
{
static const u8 mellanox_oui[3] = { 0x00, 0x02, 0xc9 };
return mellanox_workarounds &&
!memcmp(&target->ioc_guid, mellanox_oui, sizeof mellanox_oui);
}
static struct srp_iu *srp_alloc_iu(struct srp_host *host, size_t size,
gfp_t gfp_mask,
enum dma_data_direction direction)
@ -360,7 +372,7 @@ static int srp_send_req(struct srp_target_port *target)
* zero out the first 8 bytes of our initiator port ID and set
* the second 8 bytes to the local node GUID.
*/
if (topspin_workarounds && !memcmp(&target->ioc_guid, topspin_oui, 3)) {
if (srp_target_is_topspin(target)) {
printk(KERN_DEBUG PFX "Topspin/Cisco initiator port ID workaround "
"activated for target GUID %016llx\n",
(unsigned long long) be64_to_cpu(target->ioc_guid));
@ -585,8 +597,8 @@ static int srp_map_fmr(struct srp_target_port *target, struct scatterlist *scat,
if (!dev->fmr_pool)
return -ENODEV;
if ((ib_sg_dma_address(ibdev, &scat[0]) & ~dev->fmr_page_mask) &&
mellanox_workarounds && !memcmp(&target->ioc_guid, mellanox_oui, 3))
if (srp_target_is_mellanox(target) &&
(ib_sg_dma_address(ibdev, &scat[0]) & ~dev->fmr_page_mask))
return -EINVAL;
len = page_cnt = 0;
@ -1087,8 +1099,7 @@ static void srp_cm_rej_handler(struct ib_cm_id *cm_id,
break;
case IB_CM_REJ_PORT_REDIRECT:
if (topspin_workarounds &&
!memcmp(&target->ioc_guid, topspin_oui, 3)) {
if (srp_target_is_topspin(target)) {
/*
* Topspin/Cisco SRP gateways incorrectly send
* reject reason code 25 when they mean 24