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| author |   Karsten Graul <kgraul@linux.ibm.com> | 2020-05-04 14:18:38 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-05-04 10:54:39 -0700 |
| commit | c6f02ebeea3a0ff4bddddf0fd82303190ebb3dd1 (patch) | |
| tree | 479101eb52292f12f891c45f3615c16d15e16d37 /net/smc/smc_core.h | |
| parent | net/smc: save state of last sent CDC message (diff) | |
| download | linux-dev-c6f02ebeea3a0ff4bddddf0fd82303190ebb3dd1.tar.xz linux-dev-c6f02ebeea3a0ff4bddddf0fd82303190ebb3dd1.zip | |
net/smc: switch connections to alternate link
Add smc_switch_conns() to switch all connections from a link that is
going down. Find an other link to switch the connections to, and
switch each connection to the new link. smc_switch_cursor() updates the
cursors of a connection to the state of the last successfully sent CDC
message. When there is no link to switch to, terminate the link group.
Call smc_switch_conns() when a link is going down.
And with the possibility that links of connections can switch adapt CDC
and TX functions to detect and handle link switches.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_core.h')
| -rw-r--r-- | net/smc/smc_core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index 7fe53feb9dc4..584f11230c4f 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -380,6 +380,8 @@ void smcr_link_clear(struct smc_link *lnk); int smcr_buf_map_lgr(struct smc_link *lnk); int smcr_buf_reg_lgr(struct smc_link *lnk); int smcr_link_reg_rmb(struct smc_link *link, struct smc_buf_desc *rmb_desc); +struct smc_link *smc_switch_conns(struct smc_link_group *lgr, + struct smc_link *from_lnk, bool is_dev_err); void smcr_link_down_cond(struct smc_link *lnk); void smcr_link_down_cond_sched(struct smc_link *lnk); |