Differential D17393 Diff 48692 sys/dev/e1000/igb_txrx.c

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sys/dev/e1000/igb_txrx.c

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static int		static int
igb_tx_ctx_setup(struct tx_ring txr, if_pkt_info_t pi, u32 cmd_type_len, u32 *olinfo_status)		igb_tx_ctx_setup(struct tx_ring txr, if_pkt_info_t pi, u32 cmd_type_len, u32 *olinfo_status)
{		{
struct e1000_adv_tx_context_desc *TXD;		struct e1000_adv_tx_context_desc *TXD;
struct adapter *adapter = txr->adapter;		struct adapter *adapter = txr->adapter;
u32 vlan_macip_lens, type_tucmd_mlhl;		u32 vlan_macip_lens, type_tucmd_mlhl;
u32 mss_l4len_idx;		u32 mss_l4len_idx;
mss_l4len_idx = vlan_macip_lens = type_tucmd_mlhl = 0;		mss_l4len_idx = vlan_macip_lens = type_tucmd_mlhl = 0;
int offload = TRUE;

/* First check if TSO is to be used */		/* First check if TSO is to be used */
if (pi->ipi_csum_flags & CSUM_TSO)		if (pi->ipi_csum_flags & CSUM_TSO)
return (igb_tso_setup(txr, pi, cmd_type_len, olinfo_status));		return (igb_tso_setup(txr, pi, cmd_type_len, olinfo_status));

/* Indicate the whole packet as payload when not doing TSO */		/* Indicate the whole packet as payload when not doing TSO */
*olinfo_status \|= pi->ipi_len << E1000_ADVTXD_PAYLEN_SHIFT;		*olinfo_status \|= pi->ipi_len << E1000_ADVTXD_PAYLEN_SHIFT;

Show All 17 Lines	igb_tx_ctx_setup(struct tx_ring txr, if_pkt_info_t pi, u32 cmd_type_len, u32 *olinfo_status)
switch(pi->ipi_etype) {		switch(pi->ipi_etype) {
case ETHERTYPE_IP:		case ETHERTYPE_IP:
type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_IPV4;		type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_IPV4;
break;		break;
case ETHERTYPE_IPV6:		case ETHERTYPE_IPV6:
type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_IPV6;		type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_IPV6;
break;		break;
default:		default:
offload = FALSE;
break;		break;
}		}

vlan_macip_lens \|= pi->ipi_ip_hlen;		vlan_macip_lens \|= pi->ipi_ip_hlen;
type_tucmd_mlhl \|= E1000_ADVTXD_DCMD_DEXT \| E1000_ADVTXD_DTYP_CTXT;		type_tucmd_mlhl \|= E1000_ADVTXD_DCMD_DEXT \| E1000_ADVTXD_DTYP_CTXT;

switch (pi->ipi_ipproto) {		switch (pi->ipi_ipproto) {
case IPPROTO_TCP:		case IPPROTO_TCP:
if (pi->ipi_csum_flags & (CSUM_IP_TCP \| CSUM_IP6_TCP))		if (pi->ipi_csum_flags & (CSUM_IP_TCP \| CSUM_IP6_TCP)) {
type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_L4T_TCP;		type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_L4T_TCP;
		*olinfo_status \|= E1000_TXD_POPTS_TXSM << 8;
		}
break;		break;
case IPPROTO_UDP:		case IPPROTO_UDP:
if (pi->ipi_csum_flags & (CSUM_IP_UDP \| CSUM_IP6_UDP))		if (pi->ipi_csum_flags & (CSUM_IP_UDP \| CSUM_IP6_UDP)) {
type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_L4T_UDP;		type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_L4T_UDP;
		*olinfo_status \|= E1000_TXD_POPTS_TXSM << 8;
		}
break;		break;
case IPPROTO_SCTP:		case IPPROTO_SCTP:
if (pi->ipi_csum_flags & (CSUM_IP_SCTP \| CSUM_IP6_SCTP))		if (pi->ipi_csum_flags & (CSUM_IP_SCTP \| CSUM_IP6_SCTP)) {
type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_L4T_SCTP;		type_tucmd_mlhl \|= E1000_ADVTXD_TUCMD_L4T_SCTP;
		*olinfo_status \|= E1000_TXD_POPTS_TXSM << 8;
		}
break;		break;
default:		default:
offload = FALSE;
break;		break;
}		}

if (offload) /* For the TX descriptor setup */
*olinfo_status \|= E1000_TXD_POPTS_TXSM << 8;

/* 82575 needs the queue index added */		/* 82575 needs the queue index added */
if (adapter->hw.mac.type == e1000_82575)		if (adapter->hw.mac.type == e1000_82575)
mss_l4len_idx = txr->me << 4;		mss_l4len_idx = txr->me << 4;

/* Now copy bits into descriptor */		/* Now copy bits into descriptor */
TXD->vlan_macip_lens = htole32(vlan_macip_lens);		TXD->vlan_macip_lens = htole32(vlan_macip_lens);
TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);		TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
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