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net/smc: save stack space and allocate smc_init_info 

The struct smc_init_info grew over time, its time to save space on stack
and allocate this struct dynamically.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Graul 2021-10-16 11:37:43 +02:00 committed by David S. Miller
parent 24bcbe1cc6
commit ed990df29f
1 changed files with 53 additions and 30 deletions
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79
net/smc/smc_llc.c
View File

@ -870,31 +870,37 @@ int smc_llc_cli_add_link(struct smc_link *link, struct smc_llc_qentry *qentry)
struct smc_llc_msg_add_link *llc = &qentry->msg.add_link;
enum smc_lgr_type lgr_new_t = SMC_LGR_SYMMETRIC;
struct smc_link_group *lgr = smc_get_lgr(link);
struct smc_init_info *ini = NULL;
struct smc_link *lnk_new = NULL;
struct smc_init_info ini;
int lnk_idx, rc = 0;
if (!llc->qp_mtu)
goto out_reject;
ini.vlan_id = lgr->vlan_id;
smc_pnet_find_alt_roce(lgr, &ini, link->smcibdev);
ini = kzalloc(sizeof(*ini), GFP_KERNEL);
if (!ini) {
rc = -ENOMEM;
goto out_reject;
}
ini->vlan_id = lgr->vlan_id;
smc_pnet_find_alt_roce(lgr, ini, link->smcibdev);
if (!memcmp(llc->sender_gid, link->peer_gid, SMC_GID_SIZE) &&
!memcmp(llc->sender_mac, link->peer_mac, ETH_ALEN)) {
if (!ini.ib_dev)
if (!ini->ib_dev)
goto out_reject;
lgr_new_t = SMC_LGR_ASYMMETRIC_PEER;
}
if (!ini.ib_dev) {
if (!ini->ib_dev) {
lgr_new_t = SMC_LGR_ASYMMETRIC_LOCAL;
ini.ib_dev = link->smcibdev;
ini.ib_port = link->ibport;
ini->ib_dev = link->smcibdev;
ini->ib_port = link->ibport;
}
lnk_idx = smc_llc_alloc_alt_link(lgr, lgr_new_t);
if (lnk_idx < 0)
goto out_reject;
lnk_new = &lgr->lnk[lnk_idx];
rc = smcr_link_init(lgr, lnk_new, lnk_idx, &ini);
rc = smcr_link_init(lgr, lnk_new, lnk_idx, ini);
if (rc)
goto out_reject;
smc_llc_save_add_link_info(lnk_new, llc);
@ -910,7 +916,7 @@ int smc_llc_cli_add_link(struct smc_link *link, struct smc_llc_qentry *qentry)
goto out_clear_lnk;
rc = smc_llc_send_add_link(link,
lnk_new->smcibdev->mac[ini.ib_port - 1],
lnk_new->smcibdev->mac[ini->ib_port - 1],
lnk_new->gid, lnk_new, SMC_LLC_RESP);
if (rc)
goto out_clear_lnk;
@ -919,7 +925,7 @@ int smc_llc_cli_add_link(struct smc_link *link, struct smc_llc_qentry *qentry)
rc = 0;
goto out_clear_lnk;
}
rc = smc_llc_cli_conf_link(link, &ini, lnk_new, lgr_new_t);
rc = smc_llc_cli_conf_link(link, ini, lnk_new, lgr_new_t);
if (!rc)
goto out;
out_clear_lnk:
@ -928,6 +934,7 @@ out_clear_lnk:
out_reject:
smc_llc_cli_add_link_reject(qentry);
out:
kfree(ini);
kfree(qentry);
return rc;
}
@ -937,20 +944,25 @@ static void smc_llc_cli_add_link_invite(struct smc_link *link,
struct smc_llc_qentry *qentry)
{
struct smc_link_group *lgr = smc_get_lgr(link);
struct smc_init_info ini;
struct smc_init_info *ini = NULL;
if (lgr->type == SMC_LGR_SYMMETRIC ||
lgr->type == SMC_LGR_ASYMMETRIC_PEER)
goto out;
ini.vlan_id = lgr->vlan_id;
smc_pnet_find_alt_roce(lgr, &ini, link->smcibdev);
if (!ini.ib_dev)
ini = kzalloc(sizeof(*ini), GFP_KERNEL);
if (!ini)
goto out;
smc_llc_send_add_link(link, ini.ib_dev->mac[ini.ib_port - 1],
ini.ib_gid, NULL, SMC_LLC_REQ);
ini->vlan_id = lgr->vlan_id;
smc_pnet_find_alt_roce(lgr, ini, link->smcibdev);
if (!ini->ib_dev)
goto out;
smc_llc_send_add_link(link, ini->ib_dev->mac[ini->ib_port - 1],
ini->ib_gid, NULL, SMC_LLC_REQ);
out:
kfree(ini);
kfree(qentry);
}
@ -1158,28 +1170,34 @@ int smc_llc_srv_add_link(struct smc_link *link)
struct smc_link_group *lgr = link->lgr;
struct smc_llc_msg_add_link *add_llc;
struct smc_llc_qentry *qentry = NULL;
struct smc_link *link_new;
struct smc_init_info ini;
struct smc_link *link_new = NULL;
struct smc_init_info *ini;
int lnk_idx, rc = 0;
ini = kzalloc(sizeof(*ini), GFP_KERNEL);
if (!ini)
return -ENOMEM;
/* ignore client add link recommendation, start new flow */
ini.vlan_id = lgr->vlan_id;
smc_pnet_find_alt_roce(lgr, &ini, link->smcibdev);
if (!ini.ib_dev) {
ini->vlan_id = lgr->vlan_id;
smc_pnet_find_alt_roce(lgr, ini, link->smcibdev);
if (!ini->ib_dev) {
lgr_new_t = SMC_LGR_ASYMMETRIC_LOCAL;
ini.ib_dev = link->smcibdev;
ini.ib_port = link->ibport;
ini->ib_dev = link->smcibdev;
ini->ib_port = link->ibport;
}
lnk_idx = smc_llc_alloc_alt_link(lgr, lgr_new_t);
if (lnk_idx < 0)
return 0;
if (lnk_idx < 0) {
rc = 0;
goto out;
}
rc = smcr_link_init(lgr, &lgr->lnk[lnk_idx], lnk_idx, &ini);
rc = smcr_link_init(lgr, &lgr->lnk[lnk_idx], lnk_idx, ini);
if (rc)
return rc;
goto out;
link_new = &lgr->lnk[lnk_idx];
rc = smc_llc_send_add_link(link,
link_new->smcibdev->mac[ini.ib_port - 1],
link_new->smcibdev->mac[ini->ib_port - 1],
link_new->gid, link_new, SMC_LLC_REQ);
if (rc)
goto out_err;
@ -1218,10 +1236,15 @@ int smc_llc_srv_add_link(struct smc_link *link)
rc = smc_llc_srv_conf_link(link, link_new, lgr_new_t);
if (rc)
goto out_err;
kfree(ini);
return 0;
out_err:
if (link_new) {
link_new->state = SMC_LNK_INACTIVE;
smcr_link_clear(link_new, false);
}
out:
kfree(ini);
return rc;
}