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net/smc: introduce smc_pnet_find_alt_roce()

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Introduce a new function in smc_pnet.c that searches for an alternate
IB device, using an existing link group and a primary IB device. The
alternate IB device needs to be active and must have the same PNETID
as the link group.

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>
This commit is contained in:
Karsten Graul
2020-05-01 12:48:11 +02:00
committed by David S. Miller
parent 33d203302d
commit 6c868a3edc
2 changed files with 17 additions and 3 deletions
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5
net/smc/smc_pnet.h
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@@ -19,6 +19,7 @@
struct smc_ib_device;
struct smcd_dev;
struct smc_init_info;
struct smc_link_group;
/**
* struct smc_pnettable - SMC PNET table anchor
@@ -48,5 +49,7 @@ void smc_pnet_find_roce_resource(struct sock *sk, struct smc_init_info *ini);
void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini);
int smc_pnetid_by_table_ib(struct smc_ib_device *smcibdev, u8 ib_port);
int smc_pnetid_by_table_smcd(struct smcd_dev *smcd);
void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
struct smc_init_info *ini,
struct smc_ib_device *known_dev);
#endif