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config pnet on smc-tool & smc module installed
Signed-off-by: bingshen.wbs <[email protected]>
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,83 @@ | ||
package smc | ||
|
||
import ( | ||
"bytes" | ||
"fmt" | ||
"os" | ||
"os/exec" | ||
"strings" | ||
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||
"github.com/containernetworking/plugins/pkg/ns" | ||
"github.com/vishvananda/netlink" | ||
) | ||
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const ( | ||
smcPnet = "smc_pnet" | ||
) | ||
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func supportSMCR() bool { | ||
// smc module is load | ||
_, err := os.Stat("/proc/sys/net/smc/tcp2smc") | ||
if err != nil { | ||
return false | ||
} | ||
// rdma device attached | ||
rdmaLink, err := netlink.RdmaLinkList() | ||
if err != nil || len(rdmaLink) == 0 { | ||
return false | ||
} | ||
// smc-tools installed | ||
_, err = exec.Command("which", smcPnet).CombinedOutput() | ||
return err == nil | ||
} | ||
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func pnetID(name string) string { | ||
nameSlice := strings.Split(name, "_") | ||
return nameSlice[len(nameSlice)-1] | ||
} | ||
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// fixme: reflect to netlink | ||
func ensureForERDMADev(name string) error { | ||
output, err := exec.Command(smcPnet, "-s").CombinedOutput() | ||
if err != nil { | ||
return fmt.Errorf("failed to get smc-pnet stat: %v, output: %v", err, string(output)) | ||
} | ||
if bytes.Contains(output, []byte(name)) { | ||
return nil | ||
} | ||
output, err = exec.Command(smcPnet, "-a", pnetID(name), "-D", name).CombinedOutput() | ||
if err != nil { | ||
return fmt.Errorf("failed to config smc-pnet rdma device: %v, output: %v", err, string(output)) | ||
} | ||
return nil | ||
} | ||
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func ensureForNetDevice(erdmaDev string, netDevice string) error { | ||
output, err := exec.Command(smcPnet, "-s").CombinedOutput() | ||
if err != nil { | ||
return fmt.Errorf("failed to get smc-pnet stat for net device: %v, output: %v", err, string(output)) | ||
} | ||
if bytes.Contains(output, []byte(netDevice)) { | ||
return nil | ||
} | ||
output, err = exec.Command(smcPnet, "-a", pnetID(erdmaDev), "-I", netDevice).CombinedOutput() | ||
if err != nil { | ||
return fmt.Errorf("failed to config smc-pnet net device: %v, output: %v", err, string(output)) | ||
} | ||
return nil | ||
} | ||
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func ConfigSMCForDevice(erdmaDev string, netDevice string, netns ns.NetNS) error { | ||
if !supportSMCR() { | ||
return nil | ||
} | ||
if err := ensureForERDMADev(erdmaDev); err != nil { | ||
return err | ||
} | ||
if netns != nil { | ||
return netns.Do(func(ns ns.NetNS) error { | ||
return ensureForNetDevice(erdmaDev, netDevice) | ||
}) | ||
} | ||
return ensureForNetDevice(erdmaDev, netDevice) | ||
} |
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