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nfp: tls: ignore queue limits for delete commands

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We need to do our best not to drop delete commands, otherwise
we will have stale entries in the connection table.  Ignore
the control message queue limits for delete commands.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2019-07-08 19:53:08 -07:00 committed by David S. Miller
parent 3cab2afb14
commit 0f93242d96
3 changed files with 24 additions and 10 deletions
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4
drivers/net/ethernet/netronome/nfp/ccm.h
View File

@ -118,6 +118,10 @@ bool nfp_ccm_mbox_fits(struct nfp_net *nn, unsigned int size);
struct sk_buff *
nfp_ccm_mbox_msg_alloc(struct nfp_net *nn, unsigned int req_size,
unsigned int reply_size, gfp_t flags);
int __nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
enum nfp_ccm_type type,
unsigned int reply_size,
unsigned int max_reply_size, bool critical);
int nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
enum nfp_ccm_type type,
unsigned int reply_size,

25
drivers/net/ethernet/netronome/nfp/ccm_mbox.c
View File

@ -515,13 +515,13 @@ nfp_ccm_mbox_msg_prepare(struct nfp_net *nn, struct sk_buff *skb,
static int
nfp_ccm_mbox_msg_enqueue(struct nfp_net *nn, struct sk_buff *skb,
enum nfp_ccm_type type)
enum nfp_ccm_type type, bool critical)
{
struct nfp_ccm_hdr *hdr;
assert_spin_locked(&nn->mbox_cmsg.queue.lock);
if (nn->mbox_cmsg.queue.qlen >= NFP_CCM_MAX_QLEN) {
if (!critical && nn->mbox_cmsg.queue.qlen >= NFP_CCM_MAX_QLEN) {
nn_dp_warn(&nn->dp, "mailbox request queue too long\n");
return -EBUSY;
}
@ -536,10 +536,10 @@ nfp_ccm_mbox_msg_enqueue(struct nfp_net *nn, struct sk_buff *skb,
return 0;
}
int nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
enum nfp_ccm_type type,
unsigned int reply_size,
unsigned int max_reply_size)
int __nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
enum nfp_ccm_type type,
unsigned int reply_size,
unsigned int max_reply_size, bool critical)
{
int err;
@ -550,7 +550,7 @@ int nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
spin_lock_bh(&nn->mbox_cmsg.queue.lock);
err = nfp_ccm_mbox_msg_enqueue(nn, skb, type);
err = nfp_ccm_mbox_msg_enqueue(nn, skb, type, critical);
if (err)
goto err_unlock;
@ -594,6 +594,15 @@ int nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
return err;
}
int nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
enum nfp_ccm_type type,
unsigned int reply_size,
unsigned int max_reply_size)
{
return __nfp_ccm_mbox_communicate(nn, skb, type, reply_size,
max_reply_size, false);
}
static void nfp_ccm_mbox_post_runq_work(struct work_struct *work)
{
struct sk_buff *skb;
@ -650,7 +659,7 @@ int nfp_ccm_mbox_post(struct nfp_net *nn, struct sk_buff *skb,
spin_lock_bh(&nn->mbox_cmsg.queue.lock);
err = nfp_ccm_mbox_msg_enqueue(nn, skb, type);
err = nfp_ccm_mbox_msg_enqueue(nn, skb, type, false);
if (err)
goto err_unlock;

5
drivers/net/ethernet/netronome/nfp/crypto/tls.c
View File

@ -112,8 +112,9 @@ nfp_net_tls_communicate_simple(struct nfp_net *nn, struct sk_buff *skb,
struct nfp_crypto_reply_simple *reply;
int err;
err = nfp_ccm_mbox_communicate(nn, skb, type,
sizeof(*reply), sizeof(*reply));
err = __nfp_ccm_mbox_communicate(nn, skb, type,
sizeof(*reply), sizeof(*reply),
type == NFP_CCM_TYPE_CRYPTO_DEL);
if (err) {
nn_dp_warn(&nn->dp, "failed to %s TLS: %d\n", name, err);
return err;