On Thu, Jun 14, 2018 at 12:00 PM, Justin Pettit <[email protected]> wrote:
> Signed-off-by: Justin Pettit <[email protected]> > --- > lib/dpctl.c | 158 +++++++++++++++--------------- > ------------------------------ > 1 file changed, 38 insertions(+), 120 deletions(-) > > diff --git a/lib/dpctl.c b/lib/dpctl.c > index ec8c51e4b0a7..f522785a5f97 100644 > --- a/lib/dpctl.c > +++ b/lib/dpctl.c > @@ -187,6 +187,31 @@ parsed_dpif_open(const char *arg_, bool create, > struct dpif **dpifp) > return result; > } > > +/* Open a dpif with an optional name argument. > + * > + * The datapath name is not a mandatory parameter for this command. If > + * it is not specified -- so 'argc' < 'max_args' -- we retrieve it from > + * the current setup, assuming only one exists. On success stores the > + * opened dpif in '*dpif'. */ > +static int > +opt_dpif_open(int argc, const char *argv[], struct dpctl_params *dpctl_p, > + struct dpif **dpif, uint8_t max_args) > +{ > + int error = 0; > + char *dpname = argc >= max_args ? xstrdup(argv[1]) : > get_one_dp(dpctl_p); > + if (!dpname) { > + error = EINVAL; > + dpctl_error(dpctl_p, error, "datapath not found"); > + } else { > + error = parsed_dpif_open(dpname, false, dpif); > + free(dpname); > + if (error) { > + dpctl_error(dpctl_p, error, "opening datapath"); > + } > + } > + return error; > +} > + > When I wrote the generic function dpctl_ct_open_dp() for a few APIs related to a specific commit, which you now renamed to opt_dpif_open() here, I intended to come back and use it for the other callers here as well :-). Glad to see you got to it. Minor comment is ‘dpif’ could be last parameter, since it is an ‘out’ parameter Also, I am curious why you used ‘opt’ prefix, since this API is needed to retrieve a dp even if one is not specified as one of the arguments. You could use something like dpctl_open_dp_(), with a trailing underscore to specify an internal API. > static int > dpctl_add_dp(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > @@ -804,7 +829,6 @@ dpctl_dump_flows(int argc, const char *argv[], struct > dpctl_params *dpctl_p) > { > struct dpif *dpif; > struct ds ds; > - char *name; > > char *filter = NULL; > char *type = NULL; > @@ -827,19 +851,8 @@ dpctl_dump_flows(int argc, const char *argv[], struct > dpctl_params *dpctl_p) > } > } > > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc == 1 - we retrieve it from the > - * current setup, assuming only one exists. */ > - name = (argc > 1) ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!name) { > - error = EINVAL; > - goto out_free; > - } > - > - error = parsed_dpif_open(name, false, &dpif); > - free(name); > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > goto out_free; > } > > @@ -961,21 +974,11 @@ dpctl_put_flow(int argc, const char *argv[], enum > dpif_flow_put_flags flags, > struct dpif *dpif; > ovs_u128 ufid; > bool ufid_present; > - char *dp_name; > struct simap port_names; > int n, error; > > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < 4 - we retrieve it from the > - * current setup, assuming only one exists. */ > - dp_name = argc == 4 ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!dp_name) { > - return EINVAL; > - } > - error = parsed_dpif_open(dp_name, false, &dpif); > - free(dp_name); > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 4); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1070,24 +1073,14 @@ dpctl_get_flow(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > const char *key_s = argv[argc - 1]; > struct dpif_flow flow; > struct dpif *dpif; > - char *dp_name; > ovs_u128 ufid; > struct ofpbuf buf; > uint64_t stub[DPIF_FLOW_BUFSIZE / 8]; > struct ds ds; > int n, error; > > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < 3 - we retrieve it from the > - * current setup, assuming only one exists. */ > - dp_name = argc == 3 ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!dp_name) { > - return EINVAL; > - } > - error = parsed_dpif_open(dp_name, false, &dpif); > - free(dp_name); > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 3); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1132,21 +1125,11 @@ dpctl_del_flow(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > struct dpif *dpif; > ovs_u128 ufid; > bool ufid_present; > - char *dp_name; > struct simap port_names; > int n, error; > > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < 3 - we retrieve it from the > - * current setup, assuming only one exists. */ > - dp_name = argc == 3 ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!dp_name) { > - return EINVAL; > - } > - error = parsed_dpif_open(dp_name, false, &dpif); > - free(dp_name); > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 3); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1213,20 +1196,9 @@ static int > dpctl_del_flows(int argc, const char *argv[], struct dpctl_params > *dpctl_p) > { > struct dpif *dpif; > - char *name; > - int error; > > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < 2 - we retrieve it from the > - * current setup, assuming only one exists. */ > - name = (argc == 2) ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!name) { > - return EINVAL; > - } > - error = parsed_dpif_open(name, false, &dpif); > - free(name); > + int error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1268,6 +1240,7 @@ dpctl_list_commands(int argc OVS_UNUSED, const char > *argv[] OVS_UNUSED, > > return 0; > } > + > > static int > dpctl_dump_conntrack(int argc, const char *argv[], > @@ -1278,24 +1251,15 @@ dpctl_dump_conntrack(int argc, const char *argv[], > uint16_t zone, *pzone = NULL; > int tot_bkts; > struct dpif *dpif; > - char *name; > int error; > > if (argc > 1 && ovs_scan(argv[argc - 1], "zone=%"SCNu16, &zone)) { > pzone = &zone; > argc--; > } > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < 2 - we retrieve it from the > - * current setup, assuming only one exists. */ > - name = (argc == 2) ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!name) { > - return EINVAL; > - } > - error = parsed_dpif_open(name, false, &dpif); > - free(name); > + > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1409,8 +1373,6 @@ dpctl_ct_stats_show(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > { > struct dpif *dpif; > - char *name; > - > struct ct_dpif_dump_state *dump; > struct ct_dpif_entry cte; > uint16_t zone, *pzone = NULL; > @@ -1434,18 +1396,9 @@ dpctl_ct_stats_show(int argc, const char *argv[], > } > } > } > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc == 1 - we retrieve it from the > - * current setup, assuming only one exists. */ > - name = (argc > 1) ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!name) { > - return EINVAL; > - } > > - error = parsed_dpif_open(name, false, &dpif); > - free(name); > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1556,8 +1509,6 @@ dpctl_ct_bkts(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > { > struct dpif *dpif; > - char *name; > - > struct ct_dpif_dump_state *dump; > struct ct_dpif_entry cte; > uint16_t gt = 0; /* Threshold: display value when greater than gt. */ > @@ -1571,18 +1522,8 @@ dpctl_ct_bkts(int argc, const char *argv[], > } > } > > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < 2 - we retrieve it from the > - * current setup, assuming only one exists. */ > - name = (argc == 2) ? xstrdup(argv[1]) : get_one_dp(dpctl_p); > - if (!name) { > - return EINVAL; > - } > - > - error = parsed_dpif_open(name, false, &dpif); > - free(name); > + error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > return error; > } > > @@ -1657,34 +1598,11 @@ dpctl_ct_bkts(int argc, const char *argv[], > } > > static int > -dpctl_ct_open_dp(int argc, const char *argv[], > - struct dpctl_params *dpctl_p, struct dpif **dpif, > - uint8_t max_args) > -{ > - int error = 0; > - /* The datapath name is not a mandatory parameter for this command. > - * If it is not specified - so argc < max_args - we retrieve it from > the > - * current setup, assuming only one exists. */ > - char *dpname = argc >= max_args ? xstrdup(argv[1]) : > get_one_dp(dpctl_p); > - if (!dpname) { > - error = EINVAL; > - dpctl_error(dpctl_p, error, "datapath not found"); > - } else { > - error = parsed_dpif_open(dpname, false, dpif); > - free(dpname); > - if (error) { > - dpctl_error(dpctl_p, error, "opening datapath"); > - } > - } > - return error; > -} > - > -static int > dpctl_ct_set_maxconns(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > { > struct dpif *dpif; > - int error = dpctl_ct_open_dp(argc, argv, dpctl_p, &dpif, 3); > + int error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 3); > if (!error) { > uint32_t maxconns; > if (ovs_scan(argv[argc - 1], "%"SCNu32, &maxconns)) { > @@ -1710,7 +1628,7 @@ dpctl_ct_get_maxconns(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > { > struct dpif *dpif; > - int error = dpctl_ct_open_dp(argc, argv, dpctl_p, &dpif, 2); > + int error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (!error) { > uint32_t maxconns; > error = ct_dpif_get_maxconns(dpif, &maxconns); > @@ -1731,7 +1649,7 @@ dpctl_ct_get_nconns(int argc, const char *argv[], > struct dpctl_params *dpctl_p) > { > struct dpif *dpif; > - int error = dpctl_ct_open_dp(argc, argv, dpctl_p, &dpif, 2); > + int error = opt_dpif_open(argc, argv, dpctl_p, &dpif, 2); > if (!error) { > uint32_t nconns; > error = ct_dpif_get_nconns(dpif, &nconns); > -- > 2.7.4 > > _______________________________________________ > dev mailing list > [email protected] > https://mail.openvswitch.org/mailman/listinfo/ovs-dev > _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
