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ixgbe: Clean up ix_txrx

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The intention here is to reduce differences with D30072.
The only functional change is logical simplification in
ixgbe_rx_checksum.

Reviewed by:	gallatin
Differential Revision:	https://reviews.freebsd.org/D30074
This commit is contained in:
Kevin Bowling 2021-07-17 23:24:28 -07:00
parent 4bcc6d14e2
commit 51e46835e1
1 changed files with 38 additions and 45 deletions
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83
sys/dev/ixgbe/ix_txrx.c
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@ -50,16 +50,19 @@ static void ixgbe_isc_txd_flush(void *arg, uint16_t txqid, qidx_t pidx);
static int ixgbe_isc_txd_credits_update(void *arg, uint16_t txqid, bool clear);
static void ixgbe_isc_rxd_refill(void *arg, if_rxd_update_t iru);
static void ixgbe_isc_rxd_flush(void *arg, uint16_t qsidx, uint8_t flidx __unused, qidx_t pidx);
static void ixgbe_isc_rxd_flush(void *arg, uint16_t qsidx,
uint8_t flidx __unused, qidx_t pidx);
static int ixgbe_isc_rxd_available(void *arg, uint16_t qsidx, qidx_t pidx,
qidx_t budget);
qidx_t budget);
static int ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri);
static void ixgbe_rx_checksum(u32 staterr, if_rxd_info_t ri, u32 ptype);
static int ixgbe_tx_ctx_setup(struct ixgbe_adv_tx_context_desc *, if_pkt_info_t);
static void ixgbe_rx_checksum(uint32_t staterr, if_rxd_info_t ri,
uint32_t ptype);
static int ixgbe_tx_ctx_setup(struct ixgbe_adv_tx_context_desc *,
if_pkt_info_t);
extern void ixgbe_if_enable_intr(if_ctx_t ctx);
static int ixgbe_determine_rsstype(u16 pkt_info);
static int ixgbe_determine_rsstype(uint16_t pkt_info);
struct if_txrx ixgbe_txrx = {
.ift_txd_encap = ixgbe_isc_txd_encap,
@ -81,8 +84,8 @@ struct if_txrx ixgbe_txrx = {
static int
ixgbe_tx_ctx_setup(struct ixgbe_adv_tx_context_desc *TXD, if_pkt_info_t pi)
{
u32 vlan_macip_lens, type_tucmd_mlhl;
u32 olinfo_status, mss_l4len_idx, pktlen, offload;
uint32_t vlan_macip_lens, type_tucmd_mlhl;
uint32_t olinfo_status, mss_l4len_idx, pktlen, offload;
u8 ehdrlen;
offload = TRUE;
@ -150,7 +153,7 @@ ixgbe_tx_ctx_setup(struct ixgbe_adv_tx_context_desc *TXD, if_pkt_info_t pi)
offload = FALSE;
break;
}
/* Insert L4 checksum into data descriptors */
/* Insert L4 checksum into data descriptors */
if (offload)
olinfo_status |= IXGBE_TXD_POPTS_TXSM << 8;
@ -180,7 +183,7 @@ ixgbe_isc_txd_encap(void *arg, if_pkt_info_t pi)
union ixgbe_adv_tx_desc *txd = NULL;
struct ixgbe_adv_tx_context_desc *TXD;
int i, j, first, pidx_last;
u32 olinfo_status, cmd, flags;
uint32_t olinfo_status, cmd, flags;
qidx_t ntxd;
cmd = (IXGBE_ADVTXD_DTYP_DATA |
@ -364,7 +367,7 @@ ixgbe_isc_rxd_available(void *arg, uint16_t qsidx, qidx_t pidx, qidx_t budget)
struct ix_rx_queue *que = &sc->rx_queues[qsidx];
struct rx_ring *rxr = &que->rxr;
union ixgbe_adv_rx_desc *rxd;
u32 staterr;
uint32_t staterr;
int cnt, i, nrxd;
nrxd = sc->shared->isc_nrxd[0];
@ -400,11 +403,11 @@ ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
struct ifnet *ifp = iflib_get_ifp(adapter->ctx);
union ixgbe_adv_rx_desc *rxd;
u16 pkt_info, len, cidx, i;
u16 vtag = 0;
u32 ptype;
u32 staterr = 0;
bool eop;
uint16_t pkt_info, len, cidx, i;
uint16_t vtag = 0;
uint32_t ptype;
uint32_t staterr = 0;
bool eop;
i = 0;
cidx = ri->iri_cidx;
@ -434,11 +437,8 @@ ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
/* Make sure bad packets are discarded */
if (eop && (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) != 0) {
#if __FreeBSD_version >= 1100036
if (adapter->feat_en & IXGBE_FEATURE_VF)
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
#endif
rxr->rx_discarded++;
return (EBADMSG);
@ -483,35 +483,28 @@ ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
* doesn't spend time verifying the checksum.
************************************************************************/
static void
ixgbe_rx_checksum(u32 staterr, if_rxd_info_t ri, u32 ptype)
ixgbe_rx_checksum(uint32_t staterr, if_rxd_info_t ri, uint32_t ptype)
{
u16 status = (u16)staterr;
u8 errors = (u8)(staterr >> 24);
bool sctp = false;
uint16_t status = (uint16_t)staterr;
uint8_t errors = (uint8_t)(staterr >> 24);
if ((ptype & IXGBE_RXDADV_PKTTYPE_ETQF) == 0 &&
(ptype & IXGBE_RXDADV_PKTTYPE_SCTP) != 0)
sctp = TRUE;
/* If there is a layer 3 or 4 error we are done */
if (__predict_false(errors & (IXGBE_RXD_ERR_IPE | IXGBE_RXD_ERR_TCPE)))
return;
/* IPv4 checksum */
if (status & IXGBE_RXD_STAT_IPCS) {
if (!(errors & IXGBE_RXD_ERR_IPE)) {
/* IP Checksum Good */
ri->iri_csum_flags = CSUM_IP_CHECKED | CSUM_IP_VALID;
} else
ri->iri_csum_flags = 0;
}
/* TCP/UDP/SCTP checksum */
if (status & IXGBE_RXD_STAT_L4CS) {
u64 type = (CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
#if __FreeBSD_version >= 800000
if (sctp)
type = CSUM_SCTP_VALID;
#endif
if (!(errors & IXGBE_RXD_ERR_TCPE)) {
ri->iri_csum_flags |= type;
if (!sctp)
ri->iri_csum_data = htons(0xffff);
/* IP Checksum Good */
if (status & IXGBE_RXD_STAT_IPCS)
ri->iri_csum_flags = (CSUM_IP_CHECKED | CSUM_IP_VALID);
/* Valid L4E checksum */
if (__predict_true(status & IXGBE_RXD_STAT_L4CS)) {
/* SCTP header present. */
if (__predict_false((ptype & IXGBE_RXDADV_PKTTYPE_ETQF) == 0 &&
(ptype & IXGBE_RXDADV_PKTTYPE_SCTP) != 0)) {
ri->iri_csum_flags |= CSUM_SCTP_VALID;
} else {
ri->iri_csum_flags |= CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
ri->iri_csum_data = htons(0xffff);
}
}
} /* ixgbe_rx_checksum */
@ -522,7 +515,7 @@ ixgbe_rx_checksum(u32 staterr, if_rxd_info_t ri, u32 ptype)
* Parse the packet type to determine the appropriate hash
************************************************************************/
static int
ixgbe_determine_rsstype(u16 pkt_info)
ixgbe_determine_rsstype(uint16_t pkt_info)
{
switch (pkt_info & IXGBE_RXDADV_RSSTYPE_MASK) {
case IXGBE_RXDADV_RSSTYPE_IPV4_TCP: