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crypto: chelsio - Fixed Traffic Stall 

Fixed Traffic Stall caused by
- Subcommands except last should have more bit set
- For esn case subcommand is required for linear skb only
- Also Optimized is_eth_imm usage

Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Atul Gupta 2019-02-18 02:04:37 -08:00 committed by Herbert Xu
parent bf432e72c1
commit 8cd9d18373
1 changed files with 20 additions and 13 deletions
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33
drivers/crypto/chelsio/chcr_ipsec.c
View File

@ -336,7 +336,8 @@ static inline int is_eth_imm(const struct sk_buff *skb,
}
static inline unsigned int calc_tx_sec_flits(const struct sk_buff *skb,
struct ipsec_sa_entry *sa_entry)
struct ipsec_sa_entry *sa_entry,
bool *immediate)
{
unsigned int kctx_len;
unsigned int flits;
@ -354,8 +355,10 @@ static inline unsigned int calc_tx_sec_flits(const struct sk_buff *skb,
* TX Packet header plus the skb data in the Work Request.
*/
if (hdrlen)
if (hdrlen) {
*immediate = true;
return DIV_ROUND_UP(skb->len + hdrlen, sizeof(__be64));
}
flits = sgl_len(skb_shinfo(skb)->nr_frags + 1);
@ -418,7 +421,7 @@ inline void *copy_esn_pktxt(struct sk_buff *skb,
iv = skb_transport_header(skb) + sizeof(struct ip_esp_hdr);
memcpy(aadiv->iv, iv, 8);
if (is_eth_imm(skb, sa_entry)) {
if (is_eth_imm(skb, sa_entry) && !skb_is_nonlinear(skb)) {
sc_imm = (struct ulptx_idata *)(pos +
(DIV_ROUND_UP(sizeof(struct chcr_ipsec_aadiv),
sizeof(__be64)) << 3));
@ -531,15 +534,18 @@ inline void *chcr_crypto_wreq(struct sk_buff *skb,
struct adapter *adap = pi->adapter;
unsigned int ivsize = GCM_ESP_IV_SIZE;
struct chcr_ipsec_wr *wr;
bool immediate = false;
u16 immdatalen = 0;
unsigned int flits;
u32 ivinoffset;
u32 aadstart;
u32 aadstop;
u32 ciphstart;
u16 sc_more = 0;
u32 ivdrop = 0;
u32 esnlen = 0;
u32 wr_mid;
u16 ndesc;
int qidx = skb_get_queue_mapping(skb);
struct sge_eth_txq *q = &adap->sge.ethtxq[qidx + pi->first_qset];
unsigned int kctx_len = sa_entry->kctx_len;
@ -547,20 +553,24 @@ inline void *chcr_crypto_wreq(struct sk_buff *skb,
atomic_inc(&adap->chcr_stats.ipsec_cnt);
flits = calc_tx_sec_flits(skb, sa_entry);
flits = calc_tx_sec_flits(skb, sa_entry, &immediate);
ndesc = DIV_ROUND_UP(flits, 2);
if (sa_entry->esn)
ivdrop = 1;
if (is_eth_imm(skb, sa_entry))
if (immediate)
immdatalen = skb->len;
if (sa_entry->esn)
if (sa_entry->esn) {
esnlen = sizeof(struct chcr_ipsec_aadiv);
if (!skb_is_nonlinear(skb))
sc_more = 1;
}
/* WR Header */
wr = (struct chcr_ipsec_wr *)pos;
wr->wreq.op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
wr_mid = FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(flits, 2));
wr_mid = FW_CRYPTO_LOOKASIDE_WR_LEN16_V(ndesc);
if (unlikely(credits < ETHTXQ_STOP_THRES)) {
netif_tx_stop_queue(q->txq);
@ -572,10 +582,10 @@ inline void *chcr_crypto_wreq(struct sk_buff *skb,
/* ULPTX */
wr->req.ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(pi->port_id, qid);
wr->req.ulptx.len = htonl(DIV_ROUND_UP(flits, 2) - 1);
wr->req.ulptx.len = htonl(ndesc - 1);
/* Sub-command */
wr->req.sc_imm.cmd_more = FILL_CMD_MORE(!immdatalen);
wr->req.sc_imm.cmd_more = FILL_CMD_MORE(!immdatalen || sc_more);
wr->req.sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
sizeof(wr->req.key_ctx) +
kctx_len +
@ -698,7 +708,7 @@ out_free: dev_kfree_skb_any(skb);
cxgb4_reclaim_completed_tx(adap, &q->q, true);
flits = calc_tx_sec_flits(skb, sa_entry);
flits = calc_tx_sec_flits(skb, sa_entry, &immediate);
ndesc = flits_to_desc(flits);
credits = txq_avail(&q->q) - ndesc;
@ -711,9 +721,6 @@ out_free: dev_kfree_skb_any(skb);
return NETDEV_TX_BUSY;
}
if (is_eth_imm(skb, sa_entry))
immediate = true;
if (!immediate &&
unlikely(cxgb4_map_skb(adap->pdev_dev, skb, addr) < 0)) {
q->mapping_err++;