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nfp: tls: set skb decrypted flag 

Firmware indicates when a packet has been decrypted by reusing the
currently unused BPF flag.  Transfer this information into the skb
and provide a statistic of all decrypted segments.

Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dirk van der Merwe 2019-06-10 21:40:03 -07:00 committed by David S. Miller
parent f953d33ba1
commit 5bcb5c7e98
3 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/netronome/nfp/nfp_net.h
View File

@ -240,7 +240,7 @@ struct nfp_net_tx_ring {
#define PCIE_DESC_RX_I_TCP_CSUM_OK cpu_to_le16(BIT(11))
#define PCIE_DESC_RX_I_UDP_CSUM cpu_to_le16(BIT(10))
#define PCIE_DESC_RX_I_UDP_CSUM_OK cpu_to_le16(BIT(9))
#define PCIE_DESC_RX_BPF cpu_to_le16(BIT(8))
#define PCIE_DESC_RX_DECRYPTED cpu_to_le16(BIT(8))
#define PCIE_DESC_RX_EOP cpu_to_le16(BIT(7))
#define PCIE_DESC_RX_IP4_CSUM cpu_to_le16(BIT(6))
#define PCIE_DESC_RX_IP4_CSUM_OK cpu_to_le16(BIT(5))
@ -367,6 +367,7 @@ struct nfp_net_rx_ring {
* @hw_csum_rx_inner_ok: Counter of packets where the inner HW checksum was OK
* @hw_csum_rx_complete: Counter of packets with CHECKSUM_COMPLETE reported
* @hw_csum_rx_error: Counter of packets with bad checksums
* @hw_tls_rx: Number of packets with TLS decrypted by hardware
* @tx_sync: Seqlock for atomic updates of TX stats
* @tx_pkts: Number of Transmitted packets
* @tx_bytes: Number of Transmitted bytes
@ -415,6 +416,7 @@ struct nfp_net_r_vector {
u64 hw_csum_rx_ok;
u64 hw_csum_rx_inner_ok;
u64 hw_csum_rx_complete;
u64 hw_tls_rx;
u64 hw_csum_rx_error;
u64 rx_replace_buf_alloc_fail;

9
drivers/net/ethernet/netronome/nfp/nfp_net_common.c
View File

@ -1951,6 +1951,15 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
nfp_net_rx_csum(dp, r_vec, rxd, &meta, skb);
#ifdef CONFIG_TLS_DEVICE
if (rxd->rxd.flags & PCIE_DESC_RX_DECRYPTED) {
skb->decrypted = true;
u64_stats_update_begin(&r_vec->rx_sync);
r_vec->hw_tls_rx++;
u64_stats_update_end(&r_vec->rx_sync);
}
#endif
if (rxd->rxd.flags & PCIE_DESC_RX_VLAN)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
le16_to_cpu(rxd->rxd.vlan));

18
drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
View File

@ -150,7 +150,7 @@ static const struct nfp_et_stat nfp_mac_et_stats[] = {
#define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
#define NN_ET_SWITCH_STATS_LEN 9
#define NN_RVEC_GATHER_STATS 12
#define NN_RVEC_GATHER_STATS 13
#define NN_RVEC_PER_Q_STATS 3
#define NN_CTRL_PATH_STATS 1
@ -444,6 +444,7 @@ static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data)
data = nfp_pr_et(data, "hw_rx_csum_complete");
data = nfp_pr_et(data, "hw_rx_csum_err");
data = nfp_pr_et(data, "rx_replace_buf_alloc_fail");
data = nfp_pr_et(data, "rx_tls_decrypted");
data = nfp_pr_et(data, "hw_tx_csum");
data = nfp_pr_et(data, "hw_tx_inner_csum");
data = nfp_pr_et(data, "tx_gather");
@ -475,19 +476,20 @@ static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data)
tmp[2] = nn->r_vecs[i].hw_csum_rx_complete;
tmp[3] = nn->r_vecs[i].hw_csum_rx_error;
tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail;
tmp[5] = nn->r_vecs[i].hw_tls_rx;
} while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start));
do {
start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync);
data[1] = nn->r_vecs[i].tx_pkts;
data[2] = nn->r_vecs[i].tx_busy;
tmp[5] = nn->r_vecs[i].hw_csum_tx;
tmp[6] = nn->r_vecs[i].hw_csum_tx_inner;
tmp[7] = nn->r_vecs[i].tx_gather;
tmp[8] = nn->r_vecs[i].tx_lso;
tmp[9] = nn->r_vecs[i].hw_tls_tx;
tmp[10] = nn->r_vecs[i].tls_tx_fallback;
tmp[11] = nn->r_vecs[i].tls_tx_no_fallback;
tmp[6] = nn->r_vecs[i].hw_csum_tx;
tmp[7] = nn->r_vecs[i].hw_csum_tx_inner;
tmp[8] = nn->r_vecs[i].tx_gather;
tmp[9] = nn->r_vecs[i].tx_lso;
tmp[10] = nn->r_vecs[i].hw_tls_tx;
tmp[11] = nn->r_vecs[i].tls_tx_fallback;
tmp[12] = nn->r_vecs[i].tls_tx_no_fallback;
} while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start));
data += NN_RVEC_PER_Q_STATS;