d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

cxgbei: Use hardware RX flow control for offloaded iSCSI connections.

Browse Source 
Forthcoming T6 iSCSI DDP support requires hardware RX flow control.

Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D29905
This commit is contained in:
John Baldwin 2021-05-14 12:16:51 -07:00
parent 4427ac3675
commit 87bb5ed606
2 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/dev/cxgbe/cxgbei/cxgbei.c
View File

@ -315,13 +315,13 @@ do_rx_iscsi_ddp(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
tp = intotcpcb(inp);
MPASS(icp->icp_seq == tp->rcv_nxt);
MPASS(tp->rcv_wnd >= pdu_len);
tp->rcv_nxt += pdu_len;
tp->rcv_wnd -= pdu_len;
tp->t_rcvtime = ticks;
/* update rx credits */
t4_rcvd(&toep->td->tod, tp); /* XXX: sc->tom_softc.tod */
/*
* Don't update the window size or return credits since RX
* flow control is disabled.
*/
so = inp->inp_socket;
sb = &so->so_rcv;

3
sys/dev/cxgbe/cxgbei/icl_cxgbei.c
View File

@ -591,6 +591,9 @@ set_ulp_mode_iscsi(struct adapter *sc, struct toepcb *toep, u_int ulp_submode)
t4_set_tcb_field(sc, toep->ctrlq, toep, W_TCB_ULP_TYPE,
V_TCB_ULP_TYPE(M_TCB_ULP_TYPE) | V_TCB_ULP_RAW(M_TCB_ULP_RAW), val,
0, 0);
val = V_TF_RX_FLOW_CONTROL_DISABLE(1ULL);
t4_set_tcb_field(sc, toep->ctrlq, toep, W_TCB_T_FLAGS, val, val, 0, 0);
}
/*